Roger Long writes:

As a just (self) grounded private pilot, it does seem strange to go
out and do something that involves just as much responsibility and
requires just as much skill (at least to do safely) with out all the
training and oversight involved in flying aircraft.

On the other hand, with this course, in Florida at least, my 11-year-old
kid can run 100s of horsepower of powerboat around where he pleases, solo.
And 9.999 horsepower and 16 feet without it.