I've power boated there a bunch. Just be careful because the tides can really rip . Mid-September you could get into anything from Spanish to possibly early False Albacore if you fish the Hook or the rock jetty. We've even caught kings there and seen huge tarpon. And of course all the usual species in the marsh.
I've fished off the island often,and it would need to be really calm for me to go out at the jetty. Would primarily be interested on the inland side I think just wondered if it would be worth taking my JK cuda 14?