Depends on what you want to do. I fit 3 boards, 6 sails, 3 masts and booms into a 2007 Citroen Berlingo SWB with the passenger seat folded flat. The only problem is that leaves no space for a fan club to accompany me and watch admiringly from the beach.
If I was doing more than local sailing, I'd spring for the price of a motel rather than go camping.