US Patent 9414583 Waterfowl decoy motion system and method

A waterfowl decoy continuous motion system is provided. A self-propelled floating decoy is tethered to a submerged line supported below the surface of a body of water by stakes driven into the water bottom. The decoy has a skeg attached to the bottom of the decoy. The skeg is positioned at an angle offset from a longitudinal axis extending along the length of the body of the decoy. The tether is slidably attached to the submerged line, and a swivel located on the tether allows the decoy to rotate freely. The decoy is guided by the line as it moves across the surface of the water. When the tether reaches a stopper near each end of the line, the decoy makes a 180-degree turn in an arcing path and then travels in the opposite direction. The decoy repeats this process in a continuous loop.