A friend's husband has fished with this guy before, but I haven't. He's not right out of Port Aransas, but it's near there - he fishes Copano Bay out of Refugio. Paul Seidel is the guy who referred him.
Roy F. Jordan 361-543-5151
Now if you want to fish Galveston Bay, I have a great guide I'd recommend.
www.speck-tackler.com
You might even e-mail him and ask about Port Aransas - he might know someone there if you're not happy with the options that come up here.