I shoot them to stop property damage.
Shoot the last hour of the day and into night when they come out to patrol.
Open the dam to bring them in. They sense water flow, water level dropping, and water sound.
Open the dam early in the day if water drainage is a goal because they do not repair them in the daytime,
Get a high elevation stand to shoot down onto them. Bigger target.
I find a the water takes a lot of energy out of a bullet so I use something bigger than 22 LR. 22 mag or hornet, are perfect if trying to keep noise down,
Buck shot works if your gun patterns well, but I found a tight choke with #2 shot is good when you're standing on shore. Its a head shot so a turkey gun mindset would work.
A fishing rod would be handy for retrieval. You have to hit them hard and perfect to get a good floater.
