Sand and rocks on the shore can damage PWC impellers and hulls. Anchoring your PWC in shallow water protects them. Portable anchors may be too light, and larger anchors reduce speed and hog storage space. This system uses a heavy-duty anchor bag that can be filled with up to 35 lbs. of sand or rocks for anchoring, and emptied before departure. Kit includes a tri-laminate anchor bag, buoy, and 6' rope.