Abstract: An anchoring device, for use with a personal watercraft, having a tube containing layers of material including cement and a heavier material, preferably shot, used in a ratio which produces a predetermined weight. The tube is sealed with end caps. A shock absorber is positioned within the tube preferably between one of the end caps and the cement. One end cap has a fastener by which the anchoring device can be fastened to the personal watercraft. The tube and end caps are coated with a moisture and abrasion resistant material.