This is for people who would like to work their horse in a round pen but for some reason don't have one for whatever reason. All you need is two trees or two tall strong poles in the ground to string a tight line. The line should have a loop made in the middle that would hang equal distance between the trees. Then tie a lead rope from the loop hanging down just far enough that you can reach it from the ground. Make sure lead rope has a good strong snap on it and not one of those little cheap ones. Tie your horses rope to the hanging lead adjusting length as needed and Wa-la, instant round pen.
I believe the picture is self explanatory but you can contact me with questions. It's an old trainer's trick called a "High Line" or "poor man's round pen".
It works great and your horse will think your Superman! Just watch out for the line for safety's sake.