One more time with the Carnage. No more heat-shrink tubing (limited availability in small sizes), no more foam on a waxed needle (fragile, 50% chance it doesn't even come off the needle properly). Looking through Shane Stalcup's (rip) Mayflies, Top to Bottom, I found a section on extended bodies where he used Zing Wing; broke out some Swiss Straw and Super Glue and had at it. Results seem to be what I'm looking for - durable, flexible and easy to mass produce underbodies that the foam easily sticks to. Tied here in skwala colors; change to suit your bug (you might want a thicker needle for goldens/salmonflies).
hook - Dai Riki 280 #10
thread - UTC 70 hopper yellow
body/head - 1mm foam olive
binder strip - foam
wing - elk hair
feelers/legs - rubber medium brown
indicator - 2mm foam yellow
Part 1
coat needle with non-stick stuff (Mucilin used here)
start thread
cut a strip of Swiss Straw and tie in
wrap to point and back; tie off and brush body with Super Glue