At the end of last season i swam in from lano main break- was NOT fun!
as soon as i saw the mast had snapped i de-rigged and started swimming. Put the mast in the footstraps, then boom, sail, and tied it all on with downhaul rope.
in the end it was still impossible to paddle the kit- too unstable in the ocean. Also the sail fills with a fair bit of water and drags. I got to the piont where it was hole in the wall (and further north whatever that is called) or ditch the sail and paddle the board. I ditched the sail. This made it easier to paddle but still couldnt lie on top of it. An hour our so later i made it in, minus one sail and with a broken mast (my new 360

).
MORAL: paddling kit through surf and high winds for long distances without assistance does not work!
Best bet for saving your kit = waving your arms maddly for assistance. Maybe one of those kiter dudes with there awesome pulling power will lend a hand. Maybe...