Like many I have a blue heron problem again. This is my second pond at a new (to us) house. I've only seen it once and it's only got 3 fish so far but my neighbor tells me he sees it daily after I've left for work. A little history. 5000 gal pond, 4 ft deep, surrounded by big rocks and no shelves for the heron to stand on. I have a scarecrow water deterrent and last week added a fishing line barrier around the perimeter to help. The bird still comes. I've read a lot of threads but haven't found exactly what I'm looking for. I've thought about setting up a "wind guy" like you see at a car dealer or store. I'd like to put it in a pot and set it to go on with a motion sensor. I also thought about making or buying a life size large dog wood cutout put on a pole that swivels. I've been told this helps keep the geese out of golf courses. Any thoughts, plans/directions and comments would be appreciated.