Hi,
Just thought I would share something.
Tying comparadun patterns really requires good deer hair. Please don't be fooled by those who would sell you short deer hair as that alone is not sufficient. In fact, some of the best deer hair for comparaduns comes from LONG DEER HAIR.
Below are two photos of my BEST comparadun deer hair patch. As you can see, the fibers are quite long, but the TIPS (the dark colored tips) are short. That is the key to good comparadun hair. The second photo (focused on my hand - not the hair - sorry about that) shows the tips on the same patch of hair. Third photo is the use of this very same hair.