I agree thats a good idea, as long as there is a stopper to keep the kite from flying upside down.

Connecting leash to an outside line is a bad idea. Only use it if you have to release the whole deal... as a handle... (hense the name o-shit handle) but do not connect your leash to it while riding.

A simple tangle of your leash around anything could pull your kite into death spirals.