I was there last week with my 12 year old son. We fished three boats. The first was a private charter http://www.texascoastfishing.com/
for 4-5 hours. We paid $550 and fished the flats past JFK? causeway. We kept 5 specs and 1 flounder, and threw back a dozen specs and lost another 10 unknown. It was really good, a bit windy that day, but no big waves. They guy put us on the fish and we moved 6 times. We used live fish for bait. We will fish a private boat again.
The next was a dolphin docks party boat the fished a hole in corpus christi bay past the ferry area. We caught scrap fish and never moved. It is maybe $70 per person? I can't recall. If you just want to catch something, it is okay, but you can catch the same sand trout, catfish and gaftops? from the piers. The bait was a twice frozen dead shrimp. We will not fish this again unless the recent pictures show reds/specs or something more sizable and edible.
The third trip was that 2nd day afternoon on dolphin docks offshore to catch snapper. The boat scored big time. We landed three giant red snapper, and lost two near the boat. it was fun, but it was very wavy. The waves were 4 feet and the swells were 8 feet. It takes two hours to get to the spot, drift fish for 1-2 hours, then head back. It left at 3:30 pm. My son and I got sea sick along with probably 1/3 of the 40 people on the boat. We were still moving 3 days later
However, we got a ton of red snapper fillets. Snapper season is ending soon... I guess that go after other fish. We will do this trip again, but definitely only when waves and wind are a bit less. The cost was about $80 but can be less if the child shares a pole
We usually fish 3 of the 4 piers in Port Aransas too. We have lost some huge fish, caught a snapper once, and a shark and lots of sand trout and gaftop, but never caught a red or spec. Some people catch reds/specs from the piers or so I have read, but never seen.
We have studied jetty fishing and the next time this summer will scope out the North/South jetty in PortA and the Packery jetty. The jetties can be slipper and precarious. We don't have permission from the bride to wade fish.