The Hydrofoil Water Scooter
I am not quite sure what exactly that is but I have seen this thing at the same online catalog Hammacher than the giant water ball.
Here is what the description says:
Unlike other watercraft, this unique hydrofoil frame allows you to skim across water simply by hopping gently up and down, propelling you as fast as 17 mph (more than four times faster than some world champion freestyle swimming speeds). At only 26 lbs., the lightweight aircraft aluminum and fiberglass frame is easy to transport to a dock or boat for launch. Wide steps and handlebars allow confident control as your own hopping motion lifts the hydrofoils to skim quickly across a lake; the aquaskipper also provides a brisk cardiovascular workout. Virtually maintenance-free, it has no moving parts or noisy engines that require fuel.
Please if anybody has an idea why you would ever buy that thing, let me know!
seen also at bookofjoe