Rivers are up around here this time of years; not a place for dubbed-body flies. Fight foam with foam.
Tied here as a Purple Haze; change color/size to suit your needs.
hook - Dai Riki 135 #12
thread - Danville 6/0 purple
core - 20lb mono
tail/underbody - moose body hair
abdomen - 1mm foam purple
wing - Congo Hair white
hackle - grizzly/brown
thorax -dubbing purple
Part 1
put a loop in the end of a piece of mono; tie it in
measure (2x hook length) some moose body; tie in/trim butts
hook loop onto the gallows; wrap hair up the core and back down
double up a hank of CH; tie in by butts (creating a loop up front)
tie in foam strip (1/2 gap width)