Here is a simple tie for an already simple pattern... it's a Griffith's Gnat less the Peacock Herl. Mainly use this one as a trailing fly to a tandem rigged lead streamer like a Wooley Bugger or Near Deere.

It's fished wet but can be fished dry as well. Tends to do well when "bugs" are emerging have hatched but seem to have not made the final push to fly off... instead they sink and become food for hungry trout!

Recipe:
Size 14-18 dry fly hook
Black Dacron Tying Thread
Grizzly Hackle - long... at least 2" or more in length

No Herl Griffith's Gnat