Have they ever had problems with the occasional cow walking over it? I think I have a few cows that would definitely go over. I had one old girl that would walk over a Texas gate. I watched her one day and she would actually carefully place her front feet on the third or fourth pile, and then jump over. She would not stop, so she became hamburger. She was near the end of her time here anyways, but I was more concerned that she would teach some others to do the same. We have 15 texas gates in our pastures so we really don't want them to start figuring them out.