Snowshoe hare's foot has become one of my favorite materials to tie with. It floats like cork and is highly visible. The only thing difficult with it is that it can be a bit bulky so it takes a couple flies to figure out how much to add so you fly doesn't look swollen. It is okay to pull out some of the shorter guard hairs but leave the longer ones in as they are the secret to the floatation. I use it for emergers, cripples, and duns. Give it a try if you haven't already.
Snowshoe Emerger - PMD
Bunny Dun - PMD
The snowshoe emerger was absolute money on the South Fork last year.