Middle ground shoal rock danger?

[Bizer]

Twenty-five years ago, I spent an hour meandering through the area looking for rocks. The shallowest spot I found was four feet down, adjusted for low lake. That would be about five feet down at today's height. But as gwhite13 said, I wouldn't bet my lower unit on that fact. But if you're going into that area at less than one MPH and wearing polarized sunglasses, you should be OK.