Based on our extensive collection, I assume we probably all find free boat bumpers floating in the lake. We swap the mooring ball for one of these floats. The weight of the chain pulls the float under to a level where the float displacement is equal to the weight of the chain. If you pick the size right, this could be about 3-4 feet below the surface. A rope loop is tied on the top end of the float. The float can be grabbed with a hook in the spring. We were always concerned with the standard line to the shore being pulled away by the ice flow but our location is a bit tough.
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