Hot-butt version of Moser's Balloon from the right side of the pond.

hook - Dai Riki 135 #12
thread - UTC 70 tan
butt - Uni-stretch fluoro green
body - zelon dubbing tan
underwing - Congo Hair white
wing - deer hair
indicator - 1mm foam yellow

Part 1

mash barb; start thread, wrap back to point above barb and tie in Uni-stretch (leave tag-end long out the back)

wrap Uni halfway down the bend, then wrap butt up to point above barb; pull tag end over the butt and tie off

dub body up to 80% mark

taper foam strip (not quite gap width) and tie in facing forward over hook eye

tie in CH, trim even with butt