Quote Originally Posted by awright View Post
Interesting that a post named, "Portable Water Bike" just shows flashes of swimmers surging through the water but virtually no views of the "Portable Water Bike" they are featuring. One flash actually just shows the swimmer in yellow close up with the feet out of view until the final millisecond when the device would have come into view but the segment terminates.
Likely the video provider gave barest glimpses to avert onslaught of patent infringements. Short of a battery powered propeller, vented fins are still the way to make distance.