Stimulator
Imitates: Adult stonefly, large caddis, or generic big bug attractor
Quick Reference
- Best Sizes
- #8-14
- Best Season
- June through September
- Best Conditions
- Pocket water, plunge pools, fast freestone rivers, hopper-dropper rigs
- Water Temp
- 55-70°F
- Recommended Tippet
- 3X-4X nylon
How to Rig It
Big buoyant dry — perfect indicator for a heavy nymph dropper 18-30" below.
How to Present It
Slap it into pocket water, fast riffles, and seams along the bank. The high-floating elk hair lets it ride through whitewater that would drown other dries.
Why It Works
It's not a perfect imitation of anything — it's a perfect attractor of everything. The orange body, palmered hackle, and elk hair wing trigger strikes from fish that haven't seen a real stonefly in weeks.
History
Tied by Randall Kaufmann in the early 1980s for Western freestone rivers. Became the most popular searching dry fly in America.
Pro Tip
Use a #8 yellow Stimulator as the indicator on a hopper-dropper rig — it floats a heavy tungsten nymph all day and gets eaten on its own.
Frequently Asked Questions
What does a Stimulator imitate?+
Primarily an adult stonefly (Salmonfly, Golden Stone), but also large caddis, hoppers, and any high-protein attractor.
What color Stimulator should I use?+
Orange body for Salmonflies and general attractor work. Yellow body for Golden Stones and as a hopper-dropper indicator.
Not sure if Stimulator is right today?
Get a fly recommendation based on live water temp, flow, sky, and time of day for any river in the US.
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