Amazing ...
And it also shows the unbelivable humain resources and learning process, since after some month of hydrofoil it seems so natural that your body has even forgotten what was so difficult in the learning phase.
I often use the comparison with human walk of a child to try to describe this impossible balance complexity turning "rapidly" into something you can do without thinking to it ... until you try a new trick ... which will require (again) 100 additional trials before succes and another 100 moves to (again) forget why you struggled so much ...