The problem at the public lake I ski at is the jet skis. I have no problem with people wanting to ride a jetski, but a couple weeks ago I was driving down the lake going 40 when a kid on a jetski cut me off probably 30 yards in front of me. If he would have misjudged that or I hadn't slowed down fast enough, that could have been a potentially bad situation. Also, if you're on public waters, don't drive down the middle of the lake. Nothing messes up the flow of boats more that one boat driving down the middle, especially since the lake isn't that wide anyways (it's an oxbow lake from the MO river).