You could try snowshoe . See here....
Fly Tying Materials / Snowshoe Rabbit's Feet -- Orvis UK
I have been messing around with the stuff recenty and have found Bob Wyatts snowshoe emerger a great wee pattern.

No reason why it wouldn't work for f-flys and shuttllecocks.
cdc is a luv hate thing with me. I get alot of fish on yellow owls but i spend a big part of my day trying to keep them afloat.
An amadou patch and a bottle of silica based floatant eg. frogs fanny will see you ok.
Hope this helps.
Tight lines
Paul