If you go for trout, Remember to avoid what I call the "Texas Heave". You have to set the hook quick on a trout, but don't waylay it like you would a Bass or anything you go after in the gulf. Use a slow to medium pace retrieve unless the fish is swimming towards you. When a trout wants to fight let her fight. Don't horse a trout!
Now most likely when you first start fishing for trout you will catch stocker rainbows. You will think they are small, but you will still want to show and tell your friends you caught a trout from Colorado. You may want it to look more impressive than 10 inches, So one thing every new trout fisherman from Texas should learn is the proper stiff arm photo technique.
Good luck and welcome to our magnificent state!