Wicked WIRE Pine BWO: A Modern Soft Hackle Built for the Baetis Hatch

A Modern Take on a Timeless Wet Fly

If you fish Blue-Winged Olive hatches on tailwaters or freestones, this fly deserves a permanent spot in your box.

Materials List

With materials in hand, let's break down what makes each part of this fly work.

Wicked Wire Pine BWO Tying Tutorial

The Wicked Wire Body: Segmentation Without the Bulk

The first thing you notice about this fly is the body. It's immediately obvious — clean, tight, evenly segmented rings running down the shank, with none of the bulk you'd expect from an all-wire construction.

Why the Wire Body Matters Beyond Looks

Wire isn't just there for segmentation — it does real functional work on the water. A thread-bodied soft hackle is essentially neutral in weight, which is great for fishing just under the surface film. But add a wire body, and you introduce a small, controlled increase in sink rate without adding bulk or changing the fly's profile.

That subtle weight difference matters more than anglers often give it credit for. Here's where it pays off:

• Targeting a different column of the water column. During a BWO emergence, naturals are rising through multiple depths at once — from the substrate to the surface film. A slightly weighted soft hackle like this lets you cover water just below where an unweighted soft hackle or emerger would ride, without going so heavy that you lose the natural swing and drift.
• Fishing it as a dropper behind a dry fly. This is where the Wicked Wire Pine BWO really shines. Rigged as a trailing fly 12–18 inches behind a BWO dry (a parachute or comparadun works well), the wire body's slight weight lets the soft hackle sink just enough to ride in the film or slightly subsurface — right in the strike zone for trout keying on emergers and cripples, while the dry above still gets eaten on its own. It's a two-fly system that covers both the surface feeders and the fish keying on emergers, without needing added split shot or a strike indicator.
• Working the swing. On the swing, that added mass keeps tension in the leader and helps the fly track true, so the pine squirrel collar can do its job of pulsing and breathing instead of skating.

The Pine Squirrel Collar: Sparse by Design

A few reasons sparse is the right call here:

• It suggests movement instead of mimicking it literally. A dense collar reads as a static clump in the water. A sparse wrap of pine squirrel lets individual fibers separate and move independently, suggesting legs, gills, or a shuck without becoming an indistinct fur ball.
• The natural mottling does the work for you. Pine squirrel has incredible natural color variation and mottling built into the guard hairs and underfur. That mottling mimics both the legs of a natural insect and the translucent, disheveled look of an emerger struggling in the film — you get two effects from one material.
• It breathes. Because pine squirrel has both stiff guard hairs and soft underfur, it responds differently to current speed than a rigid feather hackle would. In slower current it collapses and pulses; in faster current or on the swing, it flares and gives the fly life and dimension without any action from the angler.
• You get precise control over length. Tying it in via a dubbing loop or split-thread technique lets you control exactly how much material — and what length — goes into the collar. That's especially valuable on smaller soft hackles (think size 16–20 for BWO patterns), where a traditional hen or partridge feather can be difficult to proportion correctly. With pine squirrel in a loop, you can build a size-appropriate collar on tiny hooks without the material overwhelming the fly.

The Beaver Dubbing Thorax: The Unsung Structural Piece

Right behind the eye, a small thorax of olive beaver dubbing does more work than its size suggests. Beaver dubbing has a naturally spiky, coarse texture that — unlike a smooth, tightly-dubbed thorax — gives the pine squirrel collar something to prop against.

This does two things:

1. It flares the collar outward rather than letting it collapse flat against the body, which keeps the mottled fibers visible and mobile in the water.
2. It mimics the natural profile of an emerging insect, where the thorax and wing case are noticeably bulkier than the abdomen. That extra bit of mass right behind the head reads as a nymph or emerger pushing out of its shuck — exactly the silhouette trout are looking for during a hatch.

The small size keeps the fly proportionate, but the material choice — beaver over a smoother synthetic dubbing — is what gives the collar its lift and life.

A Fly Rooted in Tradition, Built for Modern Water

Put it all together and you get a fly with a clean, modern aesthetic that still feels like it belongs in the lineage of classic North Country spiders and soft hackles. The segmented wire body reads as a sleek, translucent abdomen. The sparse pine squirrel collar suggests legs and movement without visual clutter. The beaver thorax gives the whole package structure and a lifelike profile. Nothing about it is overbuilt — every material is doing a specific job.

Fishing the Wicked Wire Pine BWO During a Baetis Hatch

Blue-Winged Olives are one of the most consistent and reliable hatches on Western tailwaters and spring creeks, often showing up on overcast, drizzly days from late fall through early spring, and again in early summer on freestones. Because BWO nymphs are strong swimmers and the duns often struggle to escape the surface film in cold, damp conditions, trout key heavily on emergers during these hatches — which is exactly this fly's strength.

• Right before and during the height of the hatch, when nymphs are actively migrating toward the surface and emergers are struggling in the film. This is when a soft hackle swung or dead-drifted just under the surface out-produces a dry fly fished alone.
• On overcast, drizzly, or cold days, when BWOs tend to hatch most heavily and emergence is prolonged — meaning trout spend more time keyed on stuck or crippled emergers rather than fully-hatched duns.
• In slower flats, seams, and tailouts, where trout have time to inspect and sip emergers just under the surface rather than chasing.

• Rig it as a dropper behind a BWO dry. Tie 12–18 inches of tippet off the bend of your dry fly's hook and let the Wicked Wire Pine BWO ride just below the surface. This two-fly rig covers risers taking duns and fish keyed on emergers simultaneously — and the dry doubles as a strike indicator.
• Use a traditional wet-fly swing in faster water. Cast slightly upstream and across, let the fly sink briefly, then let it swing through the current on a tight line. The pine squirrel collar will pulse and flare as tension builds — often triggering strikes right at the end of the swing, mimicking an emerger's final push to the surface.
• Fish it dead-drift in slower currents. In flat, slow water where duns struggle longest to emerge, a dead-drifted presentation with subtle twitches can be deadly — let the collar do the work rather than adding excessive action.
• Size down as the hatch progresses. BWOs run small — size 18–22 is common on many tailwaters. The dubbing-loop tying method for the pine squirrel collar makes it possible to keep this pattern proportionate even at smaller sizes, which matters when trout get selective later in a hatch.

Final Thoughts

The Wicked Wire Pine BWO isn't just a variation on an old idea — it's a rethink of how a soft hackle's individual components can work together. The wire body's segmentation and controlled weight, the sparse and mottled pine squirrel collar, and the propped-up beaver thorax combine into a fly that's precise, durable, and deeply effective through a Baetis hatch. Tie a few up in size 18–20 before your next overcast day on the water — you'll want them in the box.