Murray's Fly Shop - Moth Dry Fly for trout fly fishing late in the evenings as the many species of moths take to the air under cover of diminishing light. On heavily fished trout streams, many standard trout dry fly patterns cast a similar footprint. Harry Murray has designed the Moth Dry Fly to present an entirely different footprint or light cast to the fish. Why? Trout are more likely to strike a fly which is not associated with something sharp which often occurs on heavily fished trout streams everywhere.