Jay,
I know what he would recommend. He and his staff have helped me go through their bins and look for the fine deer hair with very short black tips. Now, as the "home of the Sparkle Dun", why would they not have and recommend the very best floating hair for the fly? My guess is that they do..............
I think I will ask Craig if coastal deer hair without the short black tips would actually be better for flotation.
Will let everyone know from the inventor of the Sparkle Dun.