Chris Daughters of The Caddis Fly Shop demonstrates how to tie the Sparkle Dun March Brown, a pattern he says is the hottest McKenzie River fly for this hatch. This fly is pretty easy to tie once you have the fanned comparadun wings posted up.
March Brown Sparkle Dun
Thread: Uni 6/0 Tan or Brown
Hook: TMC 100 or Gamakatsu F10 12,14
Tail/Trailing shuck: Brown Z-lon or Antron Yarn
Wing: Comparadun Deer Hair
Body: Fine and Dry March Brown Dubbing or similar