I don't know of the conditions as of now after the rain and warm temps, but last Friday 12/22 on the south side the aerator hole has increased as it always does, so I would stay away from the south side. Now on December 6th I know on the north side ther was 4-5 inches of good clear ice, and I have not been back there since. I am from Northwood, and just went and checked out thickness and never fished. I am sure that it got thicker as they say there is 6inches at Farmers beach at Clear Lake and the north side of this lake should have produced at least the same amount if not more.
Basically drill test holes, bring a float jacket and ice picks, and let us know how you did and ice thickness.
Good Luck!!