Doesn't elk grow longer hair than deer? I have a wide variety of both, and the textures vary a lot, depending on season of harvest, age of the animal and especially where the hair was growing. I tend to use deer on Eastern flies, which are smaller than the bigger Stimulators, hoppers, and caddisses I use out there. I also have patches of elk hock which have dense, non-hollow short hairs - these I use one at a time for split tails on smaller flies.