You can float through Fort but I havent done that section..Long shuttle and not the prettiest section due to all the developement in the Fort from reports..A few obstacles to portage too. Check the Fort Leonard Wood website for the guidelines on floating through..
Too many rivers to float in a lifetime around here. The Current, Jacks Fork, and Eleven Point are probably my favorites followed by the Big Piney, North Fork of the White, Meramec, Gasconade & Black. Not a big fan of the Niangua...Buffalo is awesome, but theres too many rivers in between here and there...Here's a good resource if you are looking elsewhere. Plenty of free maps and contact info for outfitters.
http://www.missouricanoe.org/statemap.html