I was just wondering what kind of roundpen everyone used to start their young horses and why. I have seen some people who prefer the solid walled roundpens that are impossible for a horse to see out of, similar to this:
While other people prefer round pens made of pipe or tubing panels, like this:
While still other people prefer wooden plank pens that are either solid or spaced like this:
I was just wondering which type everyone preferred and why. Or why you don't like the other types. I'll save my opinion until later.