Wonder Lake Ice Fishing Derby, Sunday, January 31, 2010, 6:00am -2:00 pm. Pre-derby registration at Smitty's Bait and Tackle on McCullom Lake road. Registration on day of event at Sunrise groceries or on-ice at Wonder Woods Beach-NW side of the lake. Many prizes & raffles. Open to all. (Back up date:Feb 14). I am not affiliated with this derby but have had many wonderful times fishing it. Wonder Lake Mchenry County Illinois.