I would stop by the Rivers Otter in Florence and talk with the guys in there. It’s a nice shop and the guys are very in tune to what the Bitterroot is doing. I wish I could be of more help but I have not been on the Root since spring time when the Skwalla hatch was going on. I do know that there are a lot of wading options on the Root right now and the reports that I have been getting have all been that it is fishing very well right now. You can also check out this site and read their report on the Bitterroot. They are usually right on with their reports http://www.kingfisherflyshop.com
I hope that helps a little!
Joel