That'd be cool...I think on their site there's a number you can contact to see about reserving them. Not sure how much they are; but probably wouldn't be a whole hell of a lot if some others were to pitch in...
Ill see if i can find a # i think there like $20 a day, should be room for quite a few people if there are any open the one im thinking of trying to get has a coulpe of camping spots next to it also.