At a mooring, at anchor or both: The most stable moorings fall into the embedment category of anchors that are deliberately screwed or driven into the harbor bottom. Further reduce the chance of dragging anchor by using one or two additional storm anchors. Set a mooring and anchor 45 degrees apart. If you're using three anchors, set them 120 degrees apart and join them at a swivel. Use 10-to-1 scope and heavy, oversize chain with an equal amount of chain and line. Place a riding weight at the juncture of chain and line to lower the angle of pull on the anchor. Chafing gear is essential for mooring lines.