Ahh yeah. Yeah, you can adjust and whatever to maintain the balance, but i'm undecided on whether or not leaving the ground is allowed. Otherwise you could just jump about on it, i suppose.
Alright, if your joint [that you're balancing on] leaves the ground, it ends the length of the balance. A new one can of course begin after that, but yeah. Once its airborne, the two balances are separated, time wise.