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What it is
The wet fly is the oldest style of fly there is — anglers in Scotland and northern England were swinging soft, drab subsurface flies on the rivers there centuries before anyone thought to float a dry fly. A wet fly is sparse and simple: a slim body, sometimes a little weight, and — on the most useful variety, the soft hackle — a collar of soft hen or partridge feather wound at the head. Those soft fibers are the whole secret. In the water they never sit still. They open and close and pulse with every change in the current, breathing like the twitching legs and unfurling wings of an insect swimming up toward the surface to hatch.
That is what a wet fly imitates: an emerging or drowned insect, drifting and rising in the current. And here is why this is the page a brand-new fly angler should read first. The classic way to fish a wet fly — the wet-fly swing — asks almost nothing of you. No strike indicator to watch, no delicate dead-drift to manage, no mending required. You cast, the current takes over, and the fish very often hook themselves. It is the gentlest possible on-ramp into catching trout on the fly, and it keeps catching fish for a lifetime after that.
How to fish it
The swing is the foundation. Stand in the river and face down-and-across. Cast your fly down and across the current at about a 45-degree angle, then simply hold the rod and let the current sweep the fly in a long, tightening arc until it hangs straight below you. Keep the line fairly tight as it swings so you feel the take. You do not animate the fly — the moving water pushes against the line and drags the fly across the run, swimming it like an emerging bug fighting toward the bank.
Strikes on the swing are unmistakable. The fish takes a fly that is already moving away under tension, so it mostly sets the hook against itself — you feel a sharp pull or a heavy throb. Resist the urge to yank. Let the fish load the rod, then lift smoothly. After the fly finishes its arc, let it hang in the current below you for a few seconds before recasting — that dangling pause draws a surprising number of fish.
Two refinements are worth learning early:
The Leisenring lift. Near the end of a drift, as the fly approaches a fish you have spotted or a likely lie, stop tracking the drift and hold the rod still. The current catches the tightening line and lifts your fly up through the water column, exactly like a real insect rising off the bottom to hatch. That sudden, lifelike ascent is often more than a watching trout can stand.
A team of wets. The old masters rarely fished one fly. Tie on a cast of two or three wets — a point fly at the end and one or two droppers up the leader — and a single swing covers several depths and patterns at once. It is a fast way to let the fish tell you what they want, and watching two flies swing together teaches you to read the current quickly.
When to use it
Reach for wet flies whenever insects are hatching but fish are not yet committed to the surface — which is most of the time. During a hatch, far more bugs are emerging under the film than riding on top of it, and a swung soft hackle plants your fly right in that traffic. The best windows are the start and tail of a hatch, riffled or broken water where fish hold and feed without much caution, and the warmer months of spring through fall when aquatic insects are active.
This is also the style to pick up when conditions feel discouraging. On unfamiliar water, swinging a team of wets through every likely run is the fastest way to locate willing fish. In wind or pocket water where a drag-free dry-fly drift is nearly impossible, the swing simply does not care. And on bluegill ponds and smallmouth rivers, a slowly swung or twitched soft hackle is one of the deadliest, most forgiving presentations going.
Patterns worth knowing
- Partridge & Orange — the definitive North-Country soft hackle: orange silk body, gray partridge hackle. If you carry one wet fly, carry this. It suggests a dozen different emergers and almost never fails.
- Hare’s Ear Wet — a buggy, dubbed body of hare’s mask fur that imitates a broad range of emerging mayflies and caddis. A reliable workhorse in sizes #14 to #12.
- Royal Coachman Wet — the classic American attractor wet, with its peacock-and-red body and white wing. It imitates nothing in particular and tempts everything, brook trout especially.
- Soft-Hackle Pheasant Tail — a pheasant-tail body with a soft partridge collar; a superb baetis and caddis emerger that bridges the gap between nymph and wet fly.
- March Brown Spider — a sparse, leggy spider pattern that shines during the spring March Brown hatch and any time a larger emerger is on the water.
Brands worth knowing
You can buy these flies tied and ready, but soft hackles are also among the simplest flies to tie yourself — many anglers start here.
Tied flies: Orvis and Umpqua both offer dependable, well-proportioned wets and soft hackles in the standard patterns above — an easy way to stock a box before a trip.
Materials: Hareline dubbing and hackle and Wapsi silks and threads are the staples on most tying benches, sold at nearly every fly shop.
Hackle: Partridge of Redditch — the original Yorkshire hook maker the famous fly is named for — supplies the natural partridge skins and fine wet-fly hooks that give these patterns their breathing, lifelike collar.