I recently bought a pair of snow shoe hare feet. I've used them to tie up a few of Al Campbell's "Too Easy" series of flies as well as some of the flies he mentioned in the Intermediate Tying section. My question is, what materials can hare's feet be substituted for? I know that the hair floats well, so I thought about maybe subbing it for CDC, but I was wondering what, if any, flies you tie with it.