Here is a video of the Saturday's Buckeye Buoy Tour - Run the Gamut at John Gorski's lake - Barking Shores - near Bowling Green, Ohio.
In this format, skiers are divided up into teams (we had 4 teams of 5) of various abilities.
There are two regular rounds of skiing for seeding in the finals.
In the finals, each team had to run a 26, 28, 30, 32, and 34mph pass (at any line length), and then in succession run a 22, 28 and 32off pass (at any speed).
Each team was timed by a person in the boat (rules were established for fairness and safety) and the fasted time won.
@GK put this together and it's one of the more popular formats because of the team based approach and uniqueness of the finals format.