I spend a couple hours fishing for myself today on the Lower Sac.  I cruised around in my jet boat to some prime riffles and the fishing was really good.  I landed a 3 pound wild rainbow on my 4wt spey rod and hooked a 16" rainbow on a grasshopper dry.  The swing and dry fly program is hard to beat on the Lower Sac.  Come on up and give it a try!