I would say probably if you're ranging that much in boaters, the pucon area is what you should be looking at. Other than the rio claro, and the futa there wasn't a huge bunch to run in the time frame of 2 weeks. Pucon has so much like the palguin, the siete tazas (7 teacups), liacurra, trancurra. I think if your not looking to spend all of your time on one river, pucon would be the place to go. Also look for "Kayak Pucon". Its the local kayak shop. A guy named rodrigo and his wife run it, and they will give you all the info you need.
CLAY T. WHIDDON