We caught some nice yellow cats up the river on perch last weekend. If you got a cast net, find you some shad on the lake. Something else works good on those blues, carp. Catch you a carp and cut that bad boy up for bait. I will say this, the biggest blue cat we ever caught on the San Gabriel River was on cut carp.
good luck and we might see you out there. Plan on fishing again Sat.