I got to fly in one in New Zealand, with Gavin in the back. The first sign of the jump was all sorts of excited noise coming from the back seat. Then gradually the picture ahead made sense. Fortunately it was perfectly marked by clouds -- a hill, lenticular cap cloud, gap, then sort of a wall of turbulent cloud. We went to the wall and climbed in smooth wave like conditions in front of it. Really cool.
John Cochrane