I was driving Zum with the long reins and Zum bolted and ran off with the driving reins dragging behind him. One of the long reins got around one of his back hooves and Zum tried to kick it off. This only tightened the rein around his hoof. This caused Zum to panic. The more he kicked, the tighter the rein wrapped. Zum galloped faster and faster around me. I finally got Zum to stop and I slowly loosened the rein from his hoof. Zum was very grateful for my help. Ever since then, Zum is terrified of the long reins. I heard that driving reins are only used before the first few rides. So maybe I don’t need to use them anymore, I still plan to drape the driving reins around his body just so Zum is no longer threatened by them.