Wood,

When I first built and stocked my 3 acre pond, I thought that I could tolerate the occasional heron because it is esthetically pleasing to have around...no longer. After watching them eat and/or pierce good sized bass, they are now my enemy to be dealt with by force...just like water turkeys. I applaud your efforts at the electrical fence, and hope it works for you, but for me, "force" was the only answer.