A couple fo my buddies drove all night one time to go to Michigan to fish. Got in the parking light right at daylight, and not a car in sight. They booted up, got dressed, and headed through the woods to the river. They kept hearing a faint grinding sound, and when they got to the river, it was running solid slush and small chunks of ice. Waited until later in the day for it to warm up, and the slush cleared. The only other problem they had, was anchor ice. If your not familiar with it, it's like the river freezign over, from the bottom up. The fish will back down to the lake, and wait for condtions to improve before returnining. They packed their gear in the afternoon and headed back home. 23 hours of round trip driving to watch a wasteland of ice and slush.