That is clever, looks like they got an elevator and a rudder on there… I thought it would be fun to make a little RC one you could drive around the lake.
I bet you could use ardupilot and hack something together to make it ‘fly’ with some gyro assist type features. Bonus points for putting a Optical Flow sensor on there that can handle water on the sensor.
Think the Neocean Overboat also have a computer balanced foil wing( dont know how it operates though) . Ailerons on foils is not as such a new thing if that is how the levelfoil works. Interesting with new implementations anyway.