Craw Bugger
The Craw Bugger is a just a modified woolly bugger with barbell eyes. Easy to tie. Sinks like a stone.
I did notice at Wade Lake a month ago--while watching two kids catching crayfish in shallow water--that crayfish fold their big pincers together when swimming away in panic mode, so the two claws looks like one big pear-shaped appendage. So working hard at tying two visually distinguishable pincer-legs goes beyond what's really needed. Crazy Charlie-like barbell eyes that force the hook to ride up are important. You need to be able to walk a crawfish fly slowly along the bottom. And then, periodically, to twitch it away in panic mode, with minimal snagging tribulations.
Lots of tiers make Clousers this way (with hook forced to ride pointing up). I'm beginning to think all medium to large size wet flies should be made that way. An upward pointing hook snags less and hooks better. That's hard to argue with.