I am having a raccoon issue. A raccoon is climbing my chain link fence and making off with ducks. 3 have been taken already. I am planning on putting a hotwire on top the fence to prevent the coon from climbing over. The insulators I find to attach to chain link fence put the wire 4 inches from the fence, can a coon get through that without being zapped? I wish I could just shoot the thing but I live in town. Help?