Alex (my middle son, 16) has been working with me this summer.
He spent two weeks on a lift with me doing a big window cleaning job and learned to run that 60-footer like a champ. He didn't run the 45 ft articulating because it was on a slope on soft ground. He did, however, jump onto third story balconies off of the lift and knock 'em out.
We did a roof/house/driveway combo today and the lady tipped him $25 for busting tail.