Straggle String Fly Tying Material and The S.S. Deep Purple Nymph Pattern
The S.S. Depp Purple is a mayfly imitator and is applicable whenever you have smaller mayfly nymphs in the water. I've had particularly good luck with the pattern during callibaetis, PMD, and green drake emergence.
The marabou tail seems to drive fish nuts and entices some incredibly aggressive takes. Cutthroat trout, in particular, has been a target species with great success but I've seen similar results with brown trout and rainbow trout during mayfly emergence.
Moonlit ML058 Jig Hook #16
Moonlit Tungsten Slotted Bead #3.0MM
Glow Bright Thread Purple
UTC Wire Size BR in Black
Loon UV Flow
Semperfly Straggle String in Olive