This one's been around for a while in various forms; thought the front-hackled version looked cool. Tried tying the tail down with tag end of thread but found 2 bobbins worked better for me.

hook - Tiemco 5212
thread - Danville 6/0 brown (x2)
tail/back - deer hair
body - 1mm foam orange
hackle (body) - brown
hackle (front) - coachman brown

Part 1

mash barb, attach thread at 70% point and wrap back to point above barb

tie in a strip of foam (about 3mm wide)

tie in hackle (undersize by one hook); let bobbin hang at tie-in

start second thread bobbin at 75% mark

wrap foam forward and tie off/trim at 70% mark

wrap body hackle forward; tie off and trim

clean and stack a clump of deer hair

measure for length (extend hook gap length behind)