What it is

A topwater fly floats and is fished on the surface. Three kinds cover nearly all of it:

Poppers. A cupped or flat face that pushes water and makes a pop or a gurgle when you strip it. Cork, foam or hard-bodied. Orvis's bass patterns lesson describes the popping bug as "one with a face that pops, that makes some noise in the water."
Sliders. A tapered, cone-shaped head, face forward, that slides across the surface rather than popping. Orvis's lesson says a slider like the Sneaky Pete "doesn't make quite as much commotion in the water," and Orvis's smallmouth article says some fly fishers "swear that a slider with a cone-shaped head like the Sneaky Pete is the only fly you need."
Foam bugs and spiders. Small soft-bodied floaters with rubber legs, for bluegill above all. Skip Morris, in Fly Fisherman, calls the Sponge Spider "the true floating stealth fly of panfish fishing."

Deer-hair bugs and frogs belong to the same family. Orvis's lesson calls a deer-hair frog a "great fly for largemouths."

It is one of the most visible ways to catch a fish on a fly rod and, for warm-water fish, often the simplest. Nothing has to sink, drift at the right depth or match a hatch. The fish comes to you, and you watch it happen.

Basis: Orvis (Fly Patterns for Largemouth and Smallmouth Bass lesson; Finding and Catching Smallmouths); Fly Fisherman (Skip Morris)

The words on this page

If you have come from spinning gear, these are the terms that do not carry over.

Weight (of a rod or line). Fly line is graded by weight and a rod is built for a matching number. Bigger number: heavier line, bigger and more wind-resistant flies. Our fly rod setup page explains the system.
Weight-forward line. A fly line with its mass concentrated toward the front, which helps it carry a bulky fly.
Turnover. Whether the leader straightens out at the end of the cast and lays the fly down in front of it. A bulky popper on a leader that is too light or too limp lands in a pile.
Leader and tippet. The clear length between fly line and fly, thick at the butt and thin at the end. Tippet is the final piece you tie the fly to. Sizes run on the X scale: the bigger the number, the thinner the line. Our leaders and tippet page has the chart.
Strip. Pulling line in with the hand that is not holding the rod. On a popper, a short sharp strip makes the pop.
Dropper. A second, sinking fly tied on a short length of tippet below the floating one.

Basis: editorial definitions of standard terms

When it wins

Low light. KDFWR's Summer Fishing Tips page says small topwater lures "work well early in the morning and at dusk," and that bass are shallow early and late. Orvis's bass patterns lesson calls the cork popper one of the most fun ways to catch a largemouth, "particularly mornings and evenings when they're near the surface and in shallow water."
Cloud and rain. KDFWR's stream smallmouth column: "On overcast or rainy days, they may hit topwaters all day."
Spawning and shallow bluegill. KDFWR's late-spring bluegill column has bigger male bluegill moving into the shallows around Derby week, and names sponge spiders and small cork poppers for the fly rod.
Covering water for panfish. KDFWR's summer tips list fishing poppers on a fly rod among the ways to cover more ground for bluegill.
Summer smallmouth in rivers. Orvis's smallmouth article says river smallmouth are "active all day long, even in the heat of summer," in rivers whose midday water stays below 75 degrees. That is a statement about smallmouth fishing in general, not about surface flies in particular.

Where it loses is also in the sources, and we print it in its own section below: the heat of a bright day, cold water, fish holding deep, and very clear water where a slow bug is refused.

Basis: official (KDFWR Summer Fishing Tips; KDFWR late-spring bluegill and stream smallmouth columns); Orvis

Species

Bluegill. The fish most people catch first on a popper. KDFWR: "Watching hand-sized bluegill hit these topwater lures and fighting them on fly-fishing gear is excellent sport." Morris, in Fly Fisherman, says bluegill will "feed on top of the water" and that panfish "will often take a resting fly."
Largemouth bass. Orvis's tackle lesson says largemouth call for "bigger, more air-resistant flies" than smallmouth; its patterns lesson names the cork popper and the deer-hair frog.
Smallmouth bass. Orvis's tackle lesson: smallmouth take "smaller, slimmer flies, in general." KDFWR's stream smallmouth column names "cork and deer hair poppers cast on a fly rod" for Kentucky streams.

Basis: official (KDFWR); Orvis; Fly Fisherman

Season and time of day

Spring. KDFWR's bluegill column puts bigger male bluegill in the shallows around Kentucky Derby week, "close to spawning," with swept nests visible as depressions in the bottom, and tells Kentucky Lake anglers to target the back reaches of coves in May. The stream smallmouth column, written for May, says: "Now is the best time of year to catch trophy stream smallmouth bass."
Summer. KDFWR's summer tips: look for bass shallow early in the morning and late in the evening and fish deeper as the day goes on; farm ponds produce early and late; farm ponds are "great places to catch bluegill during the summer"; and "during the summer, bigger fish may be found deeper." Lee McClellan's 2021 Kentucky Afield column puts the best summer hours at "pre-dawn to mid-morning, dusk and nighttime," says fishing in the heat of the day "usually leads to frustration," and says you will not find a better largemouth spot at those hours than "a weedy farm pond."
The middle of a hot day. The one exception we found: Phil Monahan, on Orvis News, says dragonfly imitations "work great in the heat of a sunny day when larger topwater bugs rarely draw strikes."
Fall and winter. No source we read in this run gives a season end or a water temperature for surface flies. See What we don't know yet.

Basis: official (KDFWR Summer Fishing Tips; KDFWR columns: late-spring bluegill, stream smallmouth, Productive Fishing Options During the Summer Heat of 27 May 2021); Orvis News (Monahan, 18 July 2023)

Structure, cover and current

Bluegill. KDFWR's summer tips: "around weeds, wood or rock structure." Its bluegill column, lake by lake: on Herrington, the cuts along the rocky bluffs; on Barren River, woody cover, stump beds and weedlines in the backs of coves; on Kentucky Lake, the backs of coves, best where there is flooded timber "and an overhead canopy."
Largemouth. Weed edges. McClellan's 2021 column has anglers working weed edges with a floating frog or a Jitterbug before dawn, at dusk and at night; the fly-rod version of that is a popper or a deer-hair frog on the same edge (editorial).
Stream smallmouth. KDFWR's stream column names three places in May: the bottom of the stream drops it calls riffles, the top of those drops, and flowing shoals. It describes the current-free water in the deeper holes as where fish rest.
Moving water versus still. In current, Orvis's smallmouth article casts the popper "just above where you think a bass may be hiding" and lets it drift. In slow water and lakes, it says "you can't move your fly too slowly."

Basis: official (KDFWR); Orvis; editorial on the fly-rod frog, labelled

Rod, reel and line

Beginner

For bluegill, a 4- or 5-weight. Joe Cermele, in Outdoor Life, says "a 4- or 5-weight is going to provide smoother delivery" of bluegill bugs than a 2- or 3-weight. For bass, Orvis's bass tackle lesson calls an 8-weight "probably" the best all-around rod for largemouth and smallmouth together, because it drives bigger flies, and says a 6- or 7-weight works for smallmouth alone. A floating line in every case.

Intermediate

The line matters as much as the rod. Orvis's lesson: "The best fly line to use is a simple weight forward taper," which helps the line "turn over to the large flies used for top water bugs," and a heavier line for larger flies. The reel stores line; on this fishing it matters least.

Advanced

Match the rod to the fly, not the fish. On fly size, Orvis's lesson says: "It's not really determined by the size of the fish." A creek smallmouth rod throwing a slim slider and a pond largemouth rod throwing a big deer-hair bug are two different tools even if the fish weigh the same.

Our pick, editorial: a 5-weight for bluegill and small creek bugs, a 7-weight for creek smallmouth and mid-sized poppers, an 8-weight for large bass bugs and wind.

Basis: Orvis (Fly Rod Tackle for Fishing Bass lesson); Outdoor Life (Joe Cermele, 15 May 2026); editorial on the three-rod pick, labelled

Leader and tippet

A popper is light but bulky, and it is the leader that has to turn it over. The sources go heavier and stiffer than a trout leader.

Fish	Leader	Who says so
Bluegill	9 ft 3X mono leader, 3X mono tippet	Outdoor Life (Cermele)
Bass	9 ft, 8 to 16 lb, medium-stiff nylon	RIO Bass Leader (maker)

Bluegill. Cermele: "a 9-foot 3X monofilament leader with a 3X mono tippet," and "skip light 5X and 6X leaders."
Bass. RIO describes its Bass Leader as "a medium-stiff, knotless tapered leader, ideal for casting large flies and for bass," 9 feet long, in 8 lb (0.011 inch) to 16 lb (0.015 inch), which "will easily turn over large flies, and cope with tough winds."
Shorter bass leaders. Our leaders and tippet page carries a 7 1/2 foot bass leader with 0X to 2X tippet for poppers, from a different source. The two lengths are not in conflict; a shorter leader is one fix when a bug will not turn over (editorial).

Nylon rather than fluorocarbon for a floating fly is the house view on our leaders page; no source fetched in this run states it for poppers, so treat it as editorial here.

Basis: maker (RIO); Outdoor Life (Cermele); editorial where marked

Knots

Fly to tippet: the non-slip loop. It leaves an open loop at the eye, so the bug can swing and rock instead of being held stiff. Art Scheck, on Orvis News, says the non-slip mono loop gives "subsurface flies, poppers, sliders, and big terrestrials more action," and that it "wins the strength championship in all the light nylon lines." The knot page has the steps and wrap counts.

The alternative: the improved clinch, when you want the bug held straight. That choice is ours; no source in this run compares the two on a popper.

Tippet to leader: the double surgeon's. Leader to fly line: loop-to-loop.

Basis: Orvis News (Art Scheck, 19 January 2024); editorial on the clinch alternative

Flies, sizes and color

Bluegill. Sponge spiders and small cork poppers (KDFWR). Morris, in Fly Fisherman, gives the general panfish hook range: "hooks of size 12 and 10 are typical," and "a hunt for the big ones could include flies of size 8." That is his range for panfish flies, not poppers alone.
Smallmouth. Smaller, slimmer flies (Orvis). The Sneaky Pete slider and a popper (Orvis lessons). On conventional tackle, KDFWR's stream column says to use 3- to 4-inch topwaters, "not the larger ones designed for largemouth bass in lakes"; we read that as a guide to bug size on the fly rod too, which is editorial.
Largemouth. "Bigger, more air-resistant flies" (Orvis): cork poppers, deer-hair frogs.
Smaller beats bigger, most days. Monahan, on Orvis News, goes against "big fly, big fish" and chooses smaller patterns.
Hook sizes for bass bugs. Status pending: no source we could read in this run states hook sizes for bass poppers.
Color. No source we read gives color advice for topwater flies. Editorial: a bug's color matters less to the fish than to you, so pick one you can see on the water at dusk.

Basis: official (KDFWR); Orvis; Fly Fisherman; editorial where marked

How to rig it

The order is editorial; each piece is sourced above.

Floating line on a rod sized for the bug: 4- or 5-weight for bluegill, 6 to 8 for bass.
Loop on the leader: 9 feet of 3X for bluegill, 9 feet of 8 to 16 lb bass leader for bass.
If a bug lands in a pile, shorten the leader or go heavier on the tippet before you change rods (editorial).
Tie the bug on with a non-slip loop.
Drop it beside you and give it one strip. It should sit upright and pop or slide cleanly; a bug that rolls on its side is fouled or tied on crooked.

Basis: editorial sequence of sourced components

How to fish it

The retrieves

Chug and rest. Monahan's traditional method on Orvis News: "chug it two or three times and then let it sit until the rings disappear." He adds that "a subtle, erratic retrieve will almost always outperform a chug-chug-chug steady strip," and that for a fish you can see, "try giving it just a twitch to suggest life."
Let it sit. Orvis's smallmouth article, for slow water and lakes: "Cast and let the fly sit still, until all the rings dissipate," because smallmouth "will often eyeball a fly for over a minute before suddenly pouncing on it." If nothing comes, "a few small twitches with a long rest in between," then "a faster retrieve or even a steady retrieve with no pauses."
Quiet twitches for bluegill. Morris works the Sponge Spider "in quiet twitches between pauses"; over shallow cover, "give it a twitch or gurgle, let it sit motionless for a while." Cermele: give the bug "plenty of time to just sit still between light pops."
The drift. In moving water, Orvis's smallmouth article casts just above the fish and lets the popper "drift downstream with an occasional twitch."
Worked hard. Orvis's bass patterns lesson takes the other side for smallmouth: they "will come up for a popper that's worked fairly aggressively across the surface." The same publisher prints both, slow and fast. Start slow and speed up if the slow retrieve is ignored, which is the order the smallmouth article gives.

Noise

Quiet water, quiet bug. Monahan: on dead calm water, the noise and splashing of a big popper "is too much," and he prefers "a smaller slider."
Loud when the water calls for it. Monahan: big, loud poppers do best when "fishing deep water," such as the outer edge of a large weedbed, "or when the water is choppy." Orvis's smallmouth article: a noisy popper works better "in big, deep rivers or where the water is slightly murky."

The take

No source we read in this run gives a hook-setting instruction for a surface fly. Our suggestion, editorial: wait until the bug goes under or moves off, then set with a long pull of the line hand rather than lifting the rod. The strip-set is described, with its sources, on our streamer fishing page.

Basis: Orvis News (Monahan); Orvis (smallmouth article; bass patterns lesson); Fly Fisherman (Morris); Outdoor Life (Cermele); editorial on the hookset, labelled

When to go subsurface

The 45-minute rule. KDFWR's stream smallmouth column: "The topwater bite can be sporadic. If you fish a topwater for 45 minutes or so without a strike during low light times, switch to sub-surface lures." It was written for conventional lures; it is the only time limit we found from any source.
When the sun is up. KDFWR's summer tips: bass go deeper as the day goes on, and bigger bluegill may be deeper in summer.
Bluegill ignoring the top. Morris: "Sometimes bluegills are in a mood to ignore the surface of the water"; then he drops a weighted nymph near cover or fishes a Clouser near the bottom.
Clear water. Cermele says slow popper fishing fails "most often in super-clear water," and adds a "10-inch dropper made of 3X tippet" to a winged wet fly, working the popper harder so the wet fly swims. Our dry-dropper page covers fishing two flies.
Smallmouth eating crayfish and baitfish. Orvis's smallmouth article: "Because smallmouths love crayfish and baitfish, streamer flies are often more productive." Its patterns lesson fishes a weighted crayfish with twitches near the bottom. That is our streamer fishing page.

Basis: official (KDFWR); Fly Fisherman (Morris); Outdoor Life (Cermele); Orvis

Common mistakes

Working the bug too much. Most of the retrieves the sources describe build in a rest; start slow before you try the aggressive retrieve. (Orvis News, Orvis smallmouth article, Fly Fisherman, Outdoor Life)
A loud popper on flat calm water. Go smaller and quieter, a slider. (Orvis News)
A light trout leader. Bluegill bugs on 3X, not 5X or 6X (Outdoor Life); a stiff bass leader for bigger bugs (RIO).
Fishing the surface at noon in July. The sources put the topwater hours at dawn, dusk and night. (KDFWR)
Staying on top too long. 45 minutes without a strike in low light, switch. (KDFWR)
Lifting the rod on a missed take. Editorial; see The take.

Basis: as named in each line; editorial where marked

Kayak notes

All editorial. A popper is the easiest fly to fish from a kayak, because nothing has to sink and the cast is short. Drift a creek pool and cast slightly ahead and toward the bank, so the bug sits while the boat closes the distance. Strip line onto the deck, not into the water. Cast sidearm and away from the paddle. Mounting, anchoring and safety gear are on rigging a fishing kayak.

Basis: editorial

Conventional counterpart

A popper on a fly rod is a Pop-R or a Hula Popper on a spinning rod, and a slider is close to a walking bait. KDFWR's stream column names chugger-style topwaters and walk-the-dog baits for stream smallmouth, and its summer tips list the Pop-R for bass. The fly rod's advantage is a bug that can sit still and land softly; the spinning rod's is distance. Line for conventional topwater is on line systems.

Basis: official (KDFWR) on the lures; editorial on the comparison

In Kentucky

Herrington Lake. KDFWR's bluegill column: "Herrington is a fly-rod angler's haven, as bluegill strike sponge spiders or small cork poppers presented in the cuts along the rocky bluffs that line long stretches of the lake."
Elkhorn Creek. KDFWR's stream smallmouth column calls it "a good barometer of the present condition of stream smallmouth bass" in the state and names cork and deer-hair poppers on a fly rod for stream smallmouth, early and at dusk, or all day under cloud. Check the creek's water page for the slot limit and access before you go.
Green River below Green River Lake. The same column names "the Green River below Green River Lake to Mammoth Cave National Park" among the state's stream smallmouth waters.
Kentucky Lake. KDFWR's bluegill column: "Target the back reaches of coves in May," best where there is flooded timber and an overhead canopy.
Barren River Lake. The same column: woody cover, stump beds and weedlines in the backs of coves.
Farm ponds. KDFWR's summer tips and McClellan's 2021 column both put the summer topwater hours on a farm pond: early, late and after dark for bass, all summer for bluegill. Fish one only with the owner's permission (editorial).

Read the water page and KDFWR's current regulations before you keep a fish. This page states no limits.

Basis: official (KDFWR late-spring bluegill column; KDFWR stream smallmouth column; KDFWR Summer Fishing Tips; KDFWR column of 27 May 2021); editorial where marked

What we don't know yet

Temperature. No source we read in this run gives a water temperature at which bluegill or bass start or stop taking surface flies. The only figure on this page is Orvis's 75 degree midday note for river smallmouth in general. Status pending.
Hook sizes for bass bugs. Orvis's lessons describe bass flies as bigger or smaller but give no hook sizes; the size figures here are Morris's general panfish range. Status pending.
Hookset. No source read in this run gives a hook-setting instruction for surface flies. The method in The take is editorial.
Fall. No source read in this run says when the surface bite ends in autumn in Kentucky. Status pending.
Dates on two KDFWR columns. The late-spring bluegill and stream smallmouth columns carry no date on the page; both cite KDFWR's 2019 Fishing Forecast, so the lake-by-lake advice is at least several seasons old.
KDFWR on fly-rod bass bugs. No KDFWR page we read gives fly-rod advice for largemouth specifically; the farm pond hours are written for lures.

Skill level

Beginner. A popper is about as friendly as flies get: short casts, no depth to judge, the take in plain sight. A 5-weight, a 9-foot 3X leader, a few small foam spiders and cork poppers, and a pond at dusk are a complete start. Bigger bass bugs on an 8-weight in wind are harder casting and an intermediate skill.