I deploy the ball every time I anchor. (Great Lakes.) I have deployed the cone (motor sailing) once on a charter in the tropics, because the boat had one. I had it upside down at first. The cone is a bit awkward to hoist on a cruising boat with few spare halyards, and when you have sails up there's no good place to put it that is visible from all directions. I lashed the cone to the windward shroud.In N. America I am going to say NOBODY uses day shapes on sail boats. I've seen maybe 1 anchor ball in decades of sailing.