Your horse will also need to understand that solid fences won’t come down with a mere tap. He needs to give a good jumping effort every time. If you have, or can buy, a little stack of firewood, make an approximately 8- to 12-foot-wide inviting jump about 2 feet high. The logs will come down if your horse hits them, but they aren’t as soft as the bales. Jump the log pile in both directions until your horse is relaxed and comfortable with the task.