Right now fishing is pretty strong. Last Sun we found post, pre and probably spawning fish in the east middle delta.
They would blow up on frogs, eat DS robo's, senko's, spinnerbaits.
Caught fish pretty much all day with one small lul. One caution
should you be fishin off the main San Joaquin and a big cargo ship goes by, it'll be just like the sunami pictures. It definitely sucks the water out at what seems like 10 knots
then shoves it all back in in such a rush that it'll muddy up the h2o for a long time.
Seems impossible for bass to spawn in those backwaters because they'll be sucked out like cola thru a straw.