Going out on the kayaks and breaking through the ice is a blast. We spent 3 or 4 hours doing that one afternoon on Shellcamp. You just have to time it right, otherwise you can't get anywhere. We hit it just right last year and a huge section of ice was about an inch thick--enough that when the kayak got up on it, it broke through and you could shove the whole piece away from you and keep going. The people who saw us from shore must have thought we were nuts