Id say it depends on you. How you like to ride.
In general throw front bridle I move back..makes the kite sit a little deeper in window...and it becomes a little more grunty
If you move it to the front thekite will fly a little more forward...go upwind better
So if you leave the kite to drift use the back if you turn and twitch the kite maybe the forward?
This is a little on feel and like too so why not experiment a little.
part of the fun