[Jim Sammons LJKF]

Classic, but in all seriousness, you should never have to jump off the kayak like that. I saw a few people using this method on tournament day.
Learn how to control your kayak in the surf zone and this will never be an issue. Take a class from me or take a class from someone else, but please take a class and learn the proper techniques, you will be much better off in the long run. If nothing else get some instruction off the internet and go out there with no gear and practice.