The current is pretty strong right now. I was just up there judging the Wake in the Snake tournament right in Burley. The water level is also really high right now. There's many sections of the river that's awesome for riding but if you don't know where the shallow spots are, you can get into trouble really fast. I haven't been on the river anywhere else other then in Burley.
Jason Lugo, former owner of WakeUT, lives right on the river now in Burley. I can email you his email address and you can ask some specific questions.
BTW, where you been hiding? You getting out on the water much?