Best place in water to cast net for bait fish/mullet?

Im heading down to Gaveston this friday (gulf of mexico) and im wondering where in the water is the best to catch the above? i went 3 years ago and i caught tons of mullet and 1 good catch of bait fish but the last two years have been bad and it is raining half decent down there now so i hope the waves bring in some good fish. should i go knee deep or go out a sandbar or two? i need the bait fish for good speckled trout bait and we might cook some mullet while we are there