Sorry the INDO Board has these all beat. It's sold in many many skate and surf shops as well as sport stores. They are very popular and have been on the market a while. They are roughly the ame idea but INDO boards have a lot of "Street cred" and are retailed around the world.
Google results:
Indo Board: 487,000
Vew Do Board: 27,500
I do agree though that it is a pretty simple concept and can be easily replicated, I have thought of doing one myself but dont have the materials. I have tried out the INDO board and love it if anyone is interested.