Excellent innovation, watched a documentary on it some time ago, pity it only goes just under the water. Add flexible solar cells and a big electric motor and you can go for a long way under the water, so if out cruising and it gets rough, just duck under the waves an cruisre home. it would be great to check it out in a big swell, full bore along the wall of a wave, would be an awesome experience. Might buy one and offer spectacular rides at Shipstern bluff, if they are game to try.