Sounds good but a "casper" anything is usually a move that requires at least 5-10 years of skateboarding experience. The move usually start with a kickflip, heelflip or hardflip and the landing is when your skateboard is upside down with trucks and wheels in the air. You need a considerable amount of speed as the grip of the skateboard normally stop you from beginning your slide.
This trick has been performed on bindless wakeboards and it looks sick. I think a fella in the Ten 4 dvd executed one on a skimboard, I might have to watch it again carefully. So definately possible especially off a half a foot wave to give you the initial pop. But beware Reverting it to the correct side of the board will require more clever approach. Good luck dude, Im still stuck with the uncool board offs still

bonny