On a recent multi-day trip to the floaters on a Port A headboat, I had caught a nice AJ and was preparing to try for a second, when a deckhand told me (I assume the Captain asked him to tell me this) I was limited out because applicable rules did not allow me to possess more than the one day bag limit of one AJ. I did not have any way to check this at the time. Well, now I've checked the rules; and, in this case the crew was WRONG, and I missed out on some good AJ fishing. Gulf recreational bag and possession limits for federal waters are set by the rule at 50 CFR Sec. 622.39. It sets the daily bag limit of ONE fish for AJ's. But, the possession limit, which appears at Sec. 622.39(b)(2), allows an angler to possess up to TWO bag limits when 4 conditions are met: (1)The trip must be on a charter or headboat; (2) it must span 24 hrs or more; (3) there must be at least 2 licensed operators aboard; and, (4) each passenger must have been issued and have in possession a receipt issued on behalf of the vessel that verifies the length of the trip. Typically a 24+ hr trip out of Port A meets all those conditions (until someone throws his receipt away). In case you hear the federal recreational possession limit for Gulf AJ's on a charter or headboat is one fish only, you can politely ask the Captain to re-check the rules, because the rules say otherwise if the other 3 conditions of 50 CFR Sec. 622.39(b)(2) are met.