Dry Flies3D (Double Dirty Duster)
Bob Wyatt's 3D Double Dirty Duster pairs a spun hare's mask body with a mottled 'dirty' badger hackle to suggest a caddis or mayfly riding the surface. A tying-thread rib segments the body while the sparse hackle keeps the fly low in the film, letting it skitter convincingly through riffles and runs during spring-through-fall hatches.
Spring, Summer, Fall
Intermediate
Trout
Feb 2026
Overview
Wyatt built the pattern around the buggy texture of hare's mask dubbing rather than a slim, uniform body, giving it a shaggy silhouette that reads as a hatching insect rather than one species. The badger hackle's dark centers and light edges add mottling without extra bulk, and the tying-thread rib is a substitution any tyer can make with what's already on the bobbin. Fish it dead-drift on freestone runs and stillwater edges wherever caddis or mayflies are moving.
Where to Buy This Fly
We only link to fly shops we trust. Some links are referral links, which may earn us a commission at no extra cost to you.
Materials
- Hook:
- Partridge YK4A #12
- Thread:
- Benecchi 12/0, tobacco
- Hackle:
- 'Dirty' badger
- Body:
- Hare's mask
- Rib:
- Tying thread
Behavior & Presentation
Natural Behavior: Caddis skitter across riffles during egg-laying, creating V-wakes as they bounce repeatedly. Mayflies drift calmly after emergence with wings upright drying.
Where Trout Eat It: Fish take adult insects at the surface in runs, along seams where current concentrates them, and in tail-outs during hatch activity.
How to Fish It: Dead drift through feeding lanes or add subtle twitches for caddis behavior. Focus on visible rise forms and hatch activity.
Best Water: Work seams between current speeds, tail-outs with calm water, riffle edges where insects emerge, and runs with moderate flow.
Strike Type: Watch for visible rises or expanding rings as fish confidently take floating adults.
Fishing Strategy
Rigging Suggestions: Use a 9-12 foot leader tapering to 5X tippet for delicate presentations. Apply floatant to the body and hackle.
Seasonal Timing: Most effective during peak feeding periods at dawn and dusk. Water temperatures between 45-65°F typically produce best results.
Pro Tips: Floats well with proper floatant application. The natural materials provide good visibility without spooking wary fish.
Entomology
Adult caddisflies skitter erratically across the water surface during egg-laying runs, creating distinctive v-shaped wakes as they dip and bounce repeatedly across riffles and runs. The chaotic surface disturbance and repeated contact points trigger aggressive surface strikes from trout that associate this energetic behavior with easy-to-catch prey.
- Order
- Trichoptera
- Common Name
- Caddisfly
- Organism Type
- insect
- Life Stage
- adult
