So, pro'ly a stupid question, but how can you tell if your trailer's fenders are "drive over"? I picked up a used car hauler, 22' with a 2' dove, and it has fenders which SEEM really strong. They have a brace underneath at a 45deg angle and a small piece of diamond plate on top. Just don't feel like crushing the fenders on my new trailer if it's not this type. Thanks in advance.