I'm going to give the guy the benefit of the doubt, try the watch again for another couple days and make sure to keep moving my wrist. It's only fair.
Even if I don't get my entire judgement (having to give the collection agency some), that's OK. But it's the principle - I don't want him to walk away with my money and a smile on his face. And - correct me if I'm wrong, but couldn't I put a lien against his car/house for the sum he owes me (if I win a court judgement)? Or do I need to be a business to do that?