Kiteboarding is taking off in a big way in Boracay. Head over to Bulabog Beach on the eastern side of the island to watch the show, and call in for a chat with the guys from Ocean Republic. They will be happy to advise you on how to get started, and you can rent or buy kiting equipment from them.
We watched some dude for bout a 1/2 hr try , he wasnt too good. But it doesnt look like a very easy thing to pick up.