Thanks for posting! Nothing beats the feeling of catching any fish on a fly-rod. I can't say I am an expert on Mountain White Fish. Caught one for the first time here in Idaho well over 15 years ago while river fishing for trout...buddy of mine and I did not even know what the heck it was at that time until we went home that night and looked it up in the fishing regs. I know you mentioned using a black type fly. Do you know if it was a wet type fly like a wooly bugger with a bead head or something? You mentioned using a float, was this like a small transparent type bubble or a fly-fishing strike indicator type float? Looks like allot of fun!