On Mon, 19 Oct 2009 08:05:41 -0400, Jeff wrote:

"70% of PWC accidents are collisions and 70% of these are collisions
with other PWC."
http://www.ridetechnology.com/accident.html

And it's easy to see why when you watch the promotional videos. They
are always shown as toys being ridden in circles, in close proximity
to each other. People buy them thinking that is normal behavior on
the water.