Haven't done it. Most of the rivers I ran in Oregon I did as cargo hauler. I usually simply followed the guide I was working with and followed them down the rivers. I've done alot of the rivers down in Oregon (Rogue, and a few others). But most needed trip permits to float. Wish I could help you. Was simply playing follow the leader. LOL.
"Good angling ethic is not a monopoly practiced just by fly fisherman" - Bill McMillan