When we were kids back in the 60's, we had a ski club on our lake called "The Cedar Skiers"
We did all the tricks back then (bare foot, 5 person pyramid's,ect) included me flying a kite with a 300 ft two rope on it.
It was a regular kite design, not the delta wing.
The faster the boat went , the higher you went.
If the boat lost power, you went down like a rock.
We used family boats and our biggest motors and boats back then were 16-18 feet and 75 and 60 hp motors.
We did shows up and down Lake Michigan in Wis and the U.P. but mainly on Cedar Lake in Manitowoc county.