JayWalker, what you identified as parasurfing is called kiteboarding (sometimes kitesurfing) and I can't stand to be anywhere near them. That's why I like Bird Island so much--they're banned from there.
Quite a few kiters have been injured or killed because their kites went out of control and slammed them into something, or drowned them by dragging them through the water. Skill level has nothing to do with it--it includes beginners and professionals alike. It's so common they have a term for it: kitemare.
And when not killing themselves, they're often endangering bystanders with the 100-foot razor-sharp lines on their kites and generally aggressive behavior.
Kiteboarding is easier to learn than windsurfing. If you're inclined to give it a shot, at least try not to be "one of those." :)