I know of a few in Galveston.
One is James Fulbright of "Step into Liquid" fame. He shapes Senator boards in his shop. The shop is "Strictly Hardcore Surf Specialties" on 37th and Ave R. He is a great guy who has been shaping for a long time. The shop has been there for over 25 years.
Another is Terry Davis. He shapes some awesome boards at a very fair price. He can do that because it's not his fulltime income. I know several people that surf his boards. Some only surf his boards. My room mate just had one shaped by him and I am about to talk to him about getting one shaped for me. I don't have his number on me but I can get it.
I hear that Bob Martin (who was the original shaper of Hurricane boards before he sold the name to Fullbright) still does some shaping but I wouldn't know how to get ahold of him.