No I haven't, (because of a back problem I had years ago, form a light aerobics class!) but my nephew from S.A. was sent to a private school in South Africa for 12 months, after finishing year 12 in S.A, for 'work experience' He told his dad he was going buggee jumping, so his dad flew over to visit him, & said he'd do the jump, if the boy pulled out. Lucky for his dad, he didn't have to do it!