Glen; We use to make anchors out of the track sprockets from catapiler "dozers". Those teeth really dig into the lake bottom. Its not the weight that holds achor in place. -- Rick Smedberg WA8YLZ P.O. Box 148 Custer, MI 49405 smedberg at t-one.net http://www.t-one.net/~smedberg Grid Square EN63vw