I want to loosen and then tighten my keel nuts, but rust has done a number on them, and I haven't been able to get a good grip on them with standard socket tools. Does anyone have a suggested tool for getting a grip on them and then getting them off. It's a shallow bilge on a Santana 35, no more than 3 to 4 inches deep. The nuts that are still in good shape are 1.25" but the aft three are smaller than that now. Thanks.