It sounds like a brilliant idea doesn't it? Get an industrial strength bungee, rig it up between two rocks over a lake and use a powerboat to pull your mates back and ping them out over the water.
This ultimate human slingshot should've been tons of fun. Unfortunately the bungee snapped while this lot were still in the testing phase.
This ultimate human slingshot should've been tons of fun...
Even more unfortunately for the guinea pig at the time, a length of rope attached to the bungee was strategically placed between his legs. Ouch. Just ouch.