Anyone have experience on the half day trips and what I could expect to catch this time of year?

Red snapper is going to be the main fish they target. After that it's more or less whatever's biting I believe. Expect ling, kings, or small sharks. If you are talking about the 4 hr trips though, they only go out to the jetties and you're more likely to hook into mostly sea catfish (gafftops or hardheads), whiting, and sand trout with the chance of kings, sharks, or ling. Much less likely to catch the latter though, so be warned.

Would you say thats the 5 hour trips too?

The 4 hour trips say Statewater fishing though. thought that was 9 miles out, not the jetties.
They have a 4 hour bayfishing trip too. I wonder if thats the jetties one.

No .... the 5 hour trips run out for an hour and a half to 2 hours and fish for red snapper. Then the same trip back home. So you actually get a little over an hour to fish ..... but you can get some nice snapper and the odd kingfish or ling on a 5 hour trip.