The world's first water bicycle. Those are actually pretty cool.  Looks like a great workout on the legs. 

Beasho... don't even think about it. No pump tracking Mavs with these.

Hmm, I wonder if you could surf on one of those.  You would be the dorkiest thing to ever hit the waves, but it might be a hoot.

And if you stop pedaling, you drown! 

Great design.  The "wand" foil / adjuster is cool.  I would love to see a video showing that in action.

Sorry guys, to me that looked pretty lame.  Although you can't knock the outstanding technology and execution, the ride itself seems only slightly more exiting than pedaling a lifecycle on a dock overlooking a beautiful lake...

What would be better, and easier, than electric bike foiling?

You would have to work out some battery waterproofing issues, but then sit back and enjoy the ride without any of the physical rigors of regular foiling.

Maybe add a jet ski motor... then what do you have?