I'm going to be visiting a few schools soon, and want to play tennis in college. I doubt I'm good enough to get recruited, but I might have a chance of just walking on. When I visit the college, is it smart to call first and talk to the coach, or just meet him in person first? I've also heard you aren't allowed to hit with him watching, or with any of his team, but that doesn't really make sense. Is that a real rule?