01-19-2010, 02:49 PM
My experience is that old holes have the hardest ice and thus the most difficult to drill, and especially more difficult to get your auger to bite into to start the drilling process. This is likely because it is solid ice (no layers of snow and slush and minimal air bubbles). Also, the auger tends to bounce off of the sides of the old hole, unless one is forunate enough to drill exactly in the center of the old hole, which can bind up the auger and also make it more difficult to drill the hole.
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