Unfortunately there is no were near the amount of money involved in the sport to make this viable yet. You would need someone to do if for next to nothing. Some of the really expencive rigs cost well over what I make in a year and how whould you ever get your investment back if you were to biuld one?
Cgkdisc I would love to see the final product from that link. If you could build one for around $2000 it might be worth it. That does not include the camera equipment and I don't think you could build one that cheap with a gyro.