How does a kitesurfer control the power of a kite?
A kitesurfer can control the power of the kite using the bar by sheeting it out, so the frontlines get shorter, and the backlines longer. This way the frontlines pull the fronttube into the wind further, and changes the angle of attack, giving the wind less surface to hit the kite. You can also fly the kite further into the wind window, by flying it low above the water. This way you can also edge harder forcing the kite to go to the edge of the wind window even further.
