Hi Joe, Sail stops are a form of cylindrical grasshopper. When one drops on deck, it immediately makes a big leap into the next available body of water. Now, you can either keep replacing sail stops; keeping spares on hand for when they hop, or, .... Use a piece of 1/4" bungee cord wrapped twice around the mast and tied in a square knot. It keeps the main sail slugs in place; is easily moveable; is almost instantly removable; and costs only a fraction of what the grasshopper / sail stops cost.... Connie