Greetings and welcome to the BB ...
... Brandon, from a former Rigby resident.
Follow the link for a related discussion on floating and submerged furled leaders.
http://www.flyanglersonline.com/bb/s...Furled-Leaders
I fish moving water for trout, and we have probably fished a lot of the same stretches of water. If we haven't, you are missing out on some fine fishing right there in your backyard.
I've been using thread furled leaders almost exclusively for about seven years and only "treated" one to make it float a couple times ( out of maybe 600-700 days using them ) for experimental purposes. I didn't like the results so I kept on fishing thread furled leaders that submerge for everything except stripping streamers and fishing larger, weighted nymphs ( which can be done on thread leaders, but not as well as on heavier duty material, e.g. flouro or Rio Extreme Tippet ).
Have you tried fishing submerged leaders ?? Have you given that approach a fair chance ?? If not, you might want to do that before worrying about how to make your leaders float.
John