It looks like I'll be spending around ten days in Missouri when the Yellowstone is in runoff in mid-May. I grew up there, but seldom fly fished for anything but trout. This time I plan to fish for smallmouth, carp, and gar. I'm good for flies on the latter two species, but for smallmouth I think I'd have a tendency to tie way too many different patterns and not enough of each one. So any suggestions for must have miss bugs I want to tie at least a dozen of for Ozarks smallmouth in mid-May? I expect to river/stream fish only: Meramec, Big, Castor, Bryant Creek, Big Piney, and St. Francis are the most likely.