Not what they meant by "on the rocks"

[Dave R]

Originally Posted by ApS

I find the markers easy to see in morning sunlight.

When the sun gets overhead (when everyone else is out), the colors aren't as easily seen.

That seems most likely.

Given strong winds and oversized-boat wakes, it wouldn't take much to lodge any "drifting" boat.

.

There's just no way a boat wake lifted that boat high enough to place it on top of that ledge. There are no boats on the lake that could make a wake big enough to do that. There are some that could make a wake high enough, but not broad enough. It takes a very long period swell to lift an 8' 6" wide boat that high; boat wakes have a short period and will only make that sized boat roll or pitch with very little total lift. It was clearly driven aground.