I'll answer my own question. I drove down to Boone's Landing in Union, KY this morning to check it out. I didn't want my dad pulling the boat all the way over for nothing.
The ramp area there has about 2-3 inches of good ice in it. You could probably walk across it, though I wouldn't. I guess I wouldn't have thought the ice to have been that thick and that this past weekend some fisherman might have broken out, but apparently not. Once you started to round the bend toward the river, it looked wide open. Getting there would be the problem.
I think we're going to try the East Fork dam ramp this afternoon. I hear that is open.