The lakes in Trempleau, Third, Round, Mud, and some times Long, and Second can be good at first ice. I never looked at a map, just punched holes and fished.
Lake Marinuka in Galesville can be good also.
I have not fished any of these lakes in years. I also think that getting a map of lake Onalaska would help or follow the crowds. Also the backwaters in Stoddard and Genoa.
Good luck!