I have no idea whether the girls are telling the truth or the guys are. I’ve owned large boats and rented large boats though. To reduce my liability exposure, on day one, minutes before we are leaving the dock, I would give a short speech to the guys and a short speech to the girls. The speech to the guys was essentially NO means NO on this boat and as Captain I will throw your ass off or call the cops if there is even one incident. To the girls, I would say “Ladies’, if something is going on you don’t like you scream your head off as loud as you can scream NOT whine one or two years later that someone raped you. I did throw one guy off one time for marijuana possession and use.
Otherwise, everyone must have behaved. No incidents over 2 decades.