Horse Fencing: 11 Options & What to Consider When Buying | Horse . Oct 31, 2014 . Because HTP Rail is designed as a single line of fencing, it absorbs impact without splintering and potentially injuring your horse, like wood can. . Your classic horse fence, wooden rail fencing consists of wooden boards (typically 3 or 4 for horses), nailed into wooden fence posts. Post and rail wooden..