From what I've heard, it's a great trip- similar to the Selway in the sense that is long, roadless, and class IV. I don't have the Montana guidebook with me at the moment, but from what I remember, getting to the put-in requires some logistics and the whole float is typically a 3 day endeavor. Go to montanasurf.com and buy the guidebook or I also remember CKS having it on sale on their website. Have fun.