When I was in Ithaca taking photos (see this posting about Ithaca Waterfalls), I saw a few guys in swim trunks watching me and waiting for me to finish my shot. I had seen people gorge jumping before, so I figured out pretty quickly what was going on – I signaled for them to hold up for a second, and I changed all of my settings. I had been shooting waterfalls (10+ second exposures), and I needed fast action (~1/800th of a second), so there was a lot to change up. I got everything done, signaled to them, and let fly at 10 FPS. It looked like fun! I would have tried if I had appropriate attire……  maybe. 😉