Be careful. A few yrs ago we did some riding for a Mudmen video at a production studio down at the lake.......a stunter went over the bars doing a rolling stoppie, tailsection came over and landed on rider's head...busted chinbar off his helmet....He left in an ambulance. After his accident, we were all repeatedly warned that all wheels remained on the ground. Period. It was pretty obvious that the band/production team were worried about the responsibilies that might follow.
Things like that can create a bit of a nightmare as to who is responsible. Were it just goofing off, the rider would be 100% responsible, however, when he is providing a service for someone who may end up with compensation in the form of money, exposure, or fame, the lines may get greyed.