Almost every board has a little bit of overhang, you should be fine though. I have the 32 lashed, Rome Libertine and both are no problem on this board. Depends on the boot also, different boots are different sizes.
In general though, like BA said. A 10 on it will be fine on the board.
Im all for having fun, showing your tits and getting fucked up on a river float but it can be done without being a pig.