We finally bit the bullet and had guardrail lots done for us last fall. We have two lots, each about a football field in size done and one small corner lot that is probably half of a 50ft by 50ft square (triangle shaped). These are lined with cattle panel and strung with hot wire, but the wire is seldom hot. We also have alleys that have a single guardrail at about 4 feet high, just to take the pressure off the panels if a group bunches up too much when getting moved through. I don't know how much it cost, but it has been worth every penny. In the past, we tried every thing you can think of for fence, but just could not keep all the bulls where they belong in off seasons. The winter of 2013/2014, the snow was so deep here, it created a pack that insulated the cattle from being shocked by the fencer. The hot high tensil may as well have been bailing twine stung on popsicle sticks and the panels were only 2 to 3 feet visable above the dang snow!
BTW, our guardrail came right from a road contractor up in our area and a local Amish crew did the install. They also installed street sweeper brushes for scratch posts in the lots. Again, if you can swing it money wise, it is one heck of an investment in your property value and your sanity!
