Actually seems pretty sensible depending on how it’s set up as you need a lot of power to get it out of the water planing, then you can (hopefully) keep it on the plane through human power alone.
I mean, sensible is a relative term for a pedal boat, but if you’re going to have one…
I was wondering that, the faster you go, the lower the AOA of the foils and the less drag there is underwater (assuming it’s controlled), so speed/drag might not be so linear. But then the above the water bit has the aerodynamics of a cyclist (somewhat worse than a brick).
Which raises the hypothesis, could you not just stick the “cyclist” in a prone or recumbent position?
Looks a bit Pelet-On-Sea, like those concept automated cars with treadmills.