Boater Rob, one of the C-Brats in that area, Jim on Pounder, ran a gathering trip out of Rio Vista down to Frisco. I enjoyed the Sacramento River, and the marina at Rio Vista was a good place to launch out of. The river was somewhat flooded, so a lot of crap to dodge, but we still had a good time. Some day I hope to get back, but it's not on my routine places to go from Wisconsin. BTW, search on Annual Delta/Bay Extravaganza here on C-Brats to see several years worth of threads of those trips. They'd probably give you a lot of good info on doing the Delta out of Rio Vista; Colby