Murray's Fly Shop: Oakworm Trout Dry Fly imitates several terrestrial worms which make their home in the woody debris along many trout streams. Fly Fishing for trout often means fly fishing to heavily pressured fish for many of us. These pressured trout become "educated" or wary of the standard dry fly patterns. Harry Murray designed this pattern many years ago to use for his own fishing on those heavily pressured trout streams. Today he has put it in the line to help dry fly fishermen and women catch more of those picky trout.