What is the point of putting a wing on your slalom Water Ski?

Question

You know the thing that is attached to the fin. What does it do?

Answer 1

to make it fly... duhhhhhhh

Answer 2

The little wings create downforce to help to keep the skag in the water.  They also add drag which can make you tired more quickly.

Answer 3

the wing adjusts the ski in the water to change the nature of the turn. it doesn't just keep the fin down, by adjusting the angle it can keep the ski tip lower so you can properly weight the ski in different phases of the turn. oh, and they don't make you more tired, the fun of the turns with the wing makes it so much fun you just go till ya can't hold on any more!