I have gone out the jetties at PA and POC in an 18ft kenner. I'd check for surf reports before going out. I wouldn't do it unless I have 2 strong experienced boaters on board. Furthermore, I've never caught much going out there as I was too cautious to get in close to where it looked like the best places to fish. The waves can be large and an outgoing or incoming tide can be very strong.
In the middle of the summer dog days when the gulf is flat that's different. But now now is the time of year when the weather can change so quickly. Its just not worth it. Sorry to rain on your parade, its just that I learned my lesson the hard way.