We recently finished a pole barn that is 60 X 72. It has doors and walls north and south but is open east and west for maximum ventilation. The north or front I have two cement areas one for washing and shearing. One for medicine and equipment storage. The rest is dirt. The middle is for hay storage the sides are for lambing and pens. One of the best features is that I have the ability to bring the ewes in from a field on the east side of the barn and move them around the south or back side into a run that is five feet wide. Moving them a long the back, I can then bring them into a working system made by Shauls livestock equipment that is on the west side and because of the hay stacked in the middle of the barn they cannot see what I am doing. They remain calm and without stress in holding pens munching on hay on water as I leisurely worm, vaccinate, CIDR, preg test, or whatever. My vet was very impressed. Now I would tell you that this was all a plan but it was not. It just worked out this way. I also never force them into the working alley, I just tempt them with food. At this point, I have needed to make sure all the gates are five feed so they don't injure themselves fighting to be first! It also means I can work them without assistance. Quite nice.