Inspired by Joe's post, I adopted Duckworth's Cat Puke-like fly to foam, fore and aft.
hook - Dai Riki 135 #10
thread - UTC 140 tan
core - 20lb mono
tail/underbody - moose body hair
abdomen - 1mm foam tan
wing - Congo Hair dun
hackle - barred cream
thorax -dubbing tan
Part 1
put a loop in either end of a piece of mono; tie it in at mid-point
measure (2x hook, plus gap width) some moose body; tie in/trim butts
hook mono onto the gallows; wrap hair up the core and back down
apply Super Glue at base of tail
pull strip of foam against body at base of tail
under tension, wrap tag end down the underbody; tie off but don't trim tag end
brush on Super Glue and wrap other end of foam, adjusting spacing/tension to create a tapered body