The sport of skijoring sounds like an awesomely bad idea someone cooked up on a long winter's night. Picture this: You navigate an obstacle course, on skis, while being pulled by a galloping horse. Yet equestrian skijoring has taken off as a sport in the snowy climes of Switzerland, Canada, and now, parts of the Northwest. This weekend, teams will go ski-to-ski and hoof-to-hoof at a competition in Sandpoint, Idaho. Jessica Robinson visited one skijoring practice to ask: Why?