The Sunriver Anglers Fly Tying Corner features a UV Sparkle Soft Hackle this month. It is an excellent pattern to imitate emerging Callibaetis, Pale Morning Duns and of the mayflies. I also especially like this pattern for the Crooked River to imitate the Aquatic Sow Bug. Give this pattern a try. It catches fish!
https://www.youtube.com/watch?v=MPvANGN0V0Y