fished four mile near chelsea the other day. had the place to myself except for 2 other folks that came and left in less than an hour, not sure what to make of that. 6-8" of ice in the center basin, big pressure crack on the way out. DNR came to check me, 2 very nice gentlemen. had a pike and a few large bluegills, didn't catch anything after they left, not sure how to explain that. depth finder batteries were dead, but i think i was in 8-12 fow. thank you to whoever left their leftover dead minnows on the ice, i caught the pike with one on a tip up.