The "float me" comment makes me thnk of bouyancy issues. I think it was Jerry Price of Shred Stixx that I was having the discussion with where we concluded that bouyancy wasn't as big a factor to wakesurfing as we had all believed. All you have to do is watch someone on a skimboard behind the boat. Those boards are less than an inch thick and typically made from a 5# density foam rather than the 2# density foam that most surfboards are made from.
There are a number of offerings that will work for you. This is just one example - Dennis is 6'2" and 250 pounds. He's riding a TWP Comp X 5.0.
So...let me try and refine your options. Is cost important? Is storing the board in a wakeboard rack important? Are custom graphics important? Will this board be just for you, or will it be communal and if so what are the other folks stats. What is your skill level newb, intermediate, advanced? Lastly, what is our wake like small'ish, medium or large?