California tyer Ned Long's Hacklestacker variation of a Griffith's Gnat with an indicator for better visibility (try to pick your fly out of rafts of midge clumps and you'll appreciate it). Flush-floater (without having to trim out the underside) and double-density hackle.
hook - Dai Riki 305 #16 (gives a #18 shank length with a #16 gap)
thread - Danville 6/0 black
post/indicator - Mcflyfoam cerise
body - peacock herl
hackle - grizzly
Part 1
mash barb, start thread; tie in butt ends of a loop of Mcflyfoam, wrap to bend
tie in hackle
attach loop to gallows tool; wrap hackle up post (shank length)
verify
re-attach loop to gallows and wrap hackle back down to tie-in; tie off/trim