I don't know why anyone would want to fish Folsom. Oroville has alot of areas that would be good for tube access. I was born, raised and worked For California State Parks at Oroville. I am at Millerton lake now. Don't waste your time at Millerton Lake. Here is a list of a few lakes I would suggest.
Oroville, Collins, Clear Lake, Delta, Don Pedro, McClure, Eastman, Los Banos.
Hopefully this coming year I will be able to join you all in a few of these tournaments.