Found this deer hair loop-dubbed, foam-assisted Goddard Caddis variation on a Russian site.
hook ? Dai Riki 280 #12
thread - Danville 6/0 tan
body - deer hair/1mm foam tan
legs - Mearns quail (any well-marked feather will work)
head - 1 mm foam
Part 1
mash barb, start thread, create a loop
clean a clump of deer hair, trim, insert in clip
insert clip in loop, release hair from clip, spin
stroke deer hair back and take a few wraps
tie in foam strip
take a few more wraps with deer hair chenille