There are two sets of buoys. There are the small yellow ones that are roped together to section off the swim zone. They mark the smaller area on the map. Then there are the white ones that I believe indicate a 5 mph (or is it "no boat"?) zone that is larger.
If she wasn't at the launch, then the kayaker(s) should be blamed. It's hard to believe that this damage could happen in open water, so it must have been in the surf.
One incident, with one swimmer and one kayak... maybe we should be safe and not allow either to use the water at any time.