I've been liking this slightly odd caddis pattern. It's a

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A proven, popular dry fly, the Elk Wing Caddis pattern imitates one of the most prolific and irresistible insects of the trout diet.

Elk Wing Caddis

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FISH DON'T EAT CADDIS: THE UNDERAPPRECIATED LAFONTAINE CADDIS PUPA - Bucket List Angling & Adventures