That boat has seats in the bow, so I can assure there would have been another person.
I spent a fortune investing in wake boarding only to find out my friends where giant dix, and joked many a time about solo wake boarding using remote control or something.
You guys want to check out freestyle aftermarket jet skis, should of done it years ago, finally found something that rivals wake boarding besides cables.
The boat does not seem to move or turn even though there is a wake and he seems to have the steering to the left... Is the boat pushing against a fixed object?