Pond Boss Forums GENERAL QUESTIONS Wildlife Management controlling GBH question

We have a lot of GBH around here. Only one at a time shows up at the pond. The first year I tried scaring them with an air horn and that worked like twice. Then I tried going to the pond and throwing rocks....they just flew to the other side of the pond. They would actually taunt me by landing on the roof of the house! Then I read up on the law and found it is legal to "harass" GBH but not kill them so.....I brought my old 22 from back home and started "harassing" any of them I saw by putting a round in the water a foot or two from them. That works great! If one comes by now, and they seldom do, if I walk out on the deck they just sit there. If I walk out on the deck with the old 22 they leave immediately with me never firing a shot.