as a way to practise bigger moves and just any new move in general . me and a few buddies will build a nice kicker or lip ramp throw it in the back of the truck go to the lake set it up and start hitting it. we put little floaties on the bikes so they dont sink and bam just go big and try to get a way from the bike if you out of it off the ramp or just land it like you would on dirt...safer to practise tricks jumping into water than on land for the first time..kinda like the huge faom padded boxes most pro's have in their back yards....
An6