I suggest you keep looking at customs or DIYs. It may or may not be the way to go, but if you pulled it off it could really be a sweet piece of equipment for you. I love my BOB and there are certainly complications tp be overcome with building or designing your own, but to carry something as long as a surfboard would be tricky with a BOB. Maybe a stretched BOB?
EDIT: There`s a pic towards the last few pages of the "Post your loaded rigs" thread that shows a surfboard tied onto a rear rack. May as well give that some thought too, though it looks like a pretty tough way to go in my eyes.
Last edited by rodar y rodar; 01-14-09 at 09:10 PM.