Hi, I would like to train my Holsteiner to pull a carraige. I know that his breed was initially used as carraige horses,and he's already pulled a carraige once. Can you give me any ideas on training him? I've heard that some people use long reins and walk behind their horse,to teach them to pull.Is this a good training system? I'd love to hear any ideas! Chiara Terzuolo