First, cut a steep skating line upwind...
Then, if the wind is smooth, you can fly the kite up and slightly behind you (the opposite side of the wind-window). The kite will act as a brake. But
never, EVER try this if it's gusty!
In gusty/high wind conditions, it's best to use a smaller kite. If you're far from your starting point, you may want to consider rolling up the kite
and skating back.
Where were you kiteskating? Folks are heading to El Mirage soon:
http://www.powerkiteforum.com/viewthread.php?tid=2358