Dave Carnihan -- he guides out of Craig, Montana which is about an hour north of Helena on the Missouri River. There ain't much in Craig except fly shops. Accomadations might be hard to find there, could try Cascade -- but wouldn't be a bad drive from Helena to Craig and back.

You will need to call the fly shops there to run him down. I can't remember which one to call -- it my be the "Trout Shop". They should all know who he is and be able to put you in touch. He is rather popular so he could be booked.

Good luck.