While the JetLev uses an unmanned, PWC-like vehicle to follow it around and provide the boost, the FlyBoard and Jetovator trim a lot of that cost by using what many PWC enthusiasts already own — their Jet Ski, Sea-Doo, or WaveRunner. In each case the rider removes the jet pump assembly and bolts in place a U-shaped tube that redirects thrust into a hose (typically 40′ long) that is linked to the gadget attached to the person in flight. The obvious advantage is that you can ride your PWC for its intended purpose one minute, and then switch it to rocketman mode the next. The switch is relatively simple, and won’t tax anyone’s mechanical skills. Still, these latter two are a two-person job. The actual thrust delivered is controlled by a rider that stays aboard the PWC and controls throttle. FlyBoard offers an optional throttle-by-wire kit that puts all the controls in the hands of the person up in the air. Jetovator indicated it is doing likewise, although the control has not yet hit the market. Still, even with the throttle-by-wire kits, both manufacturers suggest someone stay aboard the PWC…just to be on the safe side. All manufacturers also require a combination safety/instructional course before flying. What do you think, does flying above the water appeal to you? And for boat owners in general, how do you feel about potentially sharing the waterways with this modern squadron of flyboys?