This fly is very effective during the green Drake hatch, and is a lot of fun to tie. The recipe is as follows:
Hook: dai-riki 700 / or mustad 9672 size 6-8
Wings: burnt mallard flank tied fanwing style
Tail: moose body hair
Rib: mono thread
Abdomen: pale yellow superfine, and pheasant tail
Hackle: pale yellow grizzly