This.
I always say that the hardest part of putting together a great charter is finding the right people. It only takes one bad egg to salt an entire trip (I've had it happen). You may want to look into chartering a smaller monohull from one of the many companies down there, and simply have them add a captain. Even better, you could join up as part of a flotilla. You'd then have best of both worlds; you could retire to your own boat when you want some privacy or down time, but you'd have the opportunity to meet (and party with) the people on the other boats.
Good luck with your search <img src="http://www.traveltalkonline.com/forums/images/graemlins/Cheers.gif" alt="" />