i've seen this guy using a regular naish-leash attached to his wrist.
he was doing triple back, front, double front, back, back, double front, front, double back transition (and so on) rotations all over the place.
this dude really rocked by doing this and it seemed even cooler with the leash because it was harder - he had to care about it.
i was deeply impressed
...just my two pence...