We are installing electric fence for the first time on our farm. We have a five strand barb wire fence now, but we are trying to keep the bull from the heifers.He rode the fence over a few months ago and we had to put him in the barn. Trying to keep him to get a few more heifers. Everything that I have read tells me that the ground is the main thing. I have also read several ideas about how to ground. Any tips??