I too found that letting the brush(low blueberry plants) grow along the shore and putting a large size mulch (erosion control ) up to three feet from the shoreline has kept the geese and ducks away. They now frequent my neighbors who prefer to keep a nice manicured lawn. The result is we get to see and hear my neighbor constantly chasing them away! Endless battle. The geese return within minutes once he goes inside. When neighbors leave for the day or longer the geese seem to know and have large lawn gatherings!