I was fishing for walleye on Anchor Bay . I picked up a nice 5 pounder and threw out a marker buoy. Picked up another nice eye. Later I anchored and tried for some perch. I anchored and could still see my marker. All of the sudden I see a RED jet ski stop on my marker. The jet ski quickly took off and headed for Brandenburg park. I pulled in the anchor and went after him. When I got in there there were @ 30 jet ski's sitting next to the seawall. I did not locate the buoy. It is pretty sad that you cannot even put out a marker without some jerk stealing it.