You might look at launching in Aransas Pass at the Ransom Road county launch ramp(free). If you head straight east from there, you can go out to Ransom Island, Ransom Point, Steadman Reef, Dagger Island and Point, all good fishing areas with not too many shallow points. Look on Google Maps and you can find the channels and probable fish choke points. Tides have been running on the high side of normal, so you should be able to stay out of trouble. Remember: If in doubt, slow down! Catch'em up!
I'm an Eighth Day Adventist. On the Eighth Day, God went fishing!