Aren’t you supposed to be careful regardless of what you hear?
I stood on the shore watching to guys fish on bare ice. One was on the north end of the lake, the other just off the beach. I walked over to the guy just off the beach and asked him what he was catching and how much ice. He said pike and 5″ of ice. It was a first hand report. I didn’t measure the ice; but there were people walking out and fishing on it. It also got to -6 degrees the other day for a low; so I have no problem believing 5″ of ice.
dd