Here is a fly tied by Todd Deziel, a local angler and expert fly tier. I’ve tested these patterns in the spring and fall many times and they work.

TODD’S STONE
Hook: Dai-Riki 135 sz.8, 10, 12
Tail: Black pearl braid with goose biots melted in a “V” shape
Tail Fluff: Fluff from the base of black hen hackle.
Body: Life cycle peacock dubbing
Collar: Black hen hackle palmered to back of eyes
Wing Case: Black hologram metallic braid (Gudebrod)
Eyes: Burned 40# Maxima Chameleon
Thread: Black 8/0