I plan to be there this summer too. I've not fished much in the summer but would like to also know what fish to expect in the surf. I fished the port A surf, and the packery channel area and surf last October through November and caught a few trout and reds.
I fished the surf near Mustang Island state park jetties, beach access rd 2, last weekend (mother's day), and caught hardheads, and small ladyfish. We used cut mullet and live shrimp. I couldn't get out and wade the surf and fish with a lure like I normally do. The winds were blowing so hard the jelly fish were comming in. I was stung a couple of times and decided to stay out of the water.
I've caught a few 20" + specs, and a few slot reds in the past, in the port A surf useing 3" "electric chicken" plastics on a 1/0 or 2/0 jig head. The "3" new penny shrimp" plastics also worked well for me.
Good luck to you. I'll be watching with intrest on what you find out and/or how you do. I'll be back there in Mid June.
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***I Love to fish, but I'd rather catch!***