Yes, here it is a source of inexhaustible energy .. Its density is 1000 times better than that of air .. so the devices can also be 1000 times smaller
Here instead of a water pump, this pier can drive generators directly instead of wheels ..
And here is a film that shows that such a motor (half rotate) cannot be effectively braked A for waves, it is enough to make sufficiently long arms, and it will also work with great efficiency.
https://www.new4stroke.com/drezyna.mp4
Andrew