Today Saturday the 18th of July I was buzzed by two jet skis at south canyon. The wave wasn't in so I headed to the Glenwood playpark where these two guys were jumping there jet skis off the concrete blocks that are just under water on the river left side. As far as I know this part of the Colorado is off limits to powered watercraft. This guys were pretty aprochable and talked to me after I called the cops because they were being more than a little reckless. For example I watched them jump and crash at least a dozen times in 15 minutes. The officer didn't give them a ticket but I'm pretty sure it was totally illegal. They approched me afterward and were pretty cool and said that they "just wanted to share the river". I'm all for sharing but inless you're search and rescue I'm pretty sure you can't have a motorized craft on the water. Can anyone let me know if I'm off base? And if it is illegal who would inforce the law?