Just saw the closed thread and I have some useful info for both JC and (maybe Bob W). I've worked on our local Garden Tour for several years and herons and ponds are a constant issue in puget sound. People have had 100% success with putting a heron sculpture next to their pond and not getting any more real visitors. Herons REALLY like to fish alone. JC I will guarantee this will work for you. Bob I'm not so sure in a larger setting (or how large your setting is) but you might give it a try. Maybe several sculptures that members move around frequently...it may not stop it but I bet it would really cut down the losses.