I think Chopper has made a great point on this subject. Here in NJ, helmets are the law. As mentioned in other posts, you would be pulled over by every police officer who saw you and I can almost guarantee that you'd fill a saddlebag with the tickets you'd amass. Municipal courts are notoriously unsympathetic when it comes to explaining tickets. I understand you have a medical exemption, but the court could take the opinion that riding a motorcycle isn't a necessity, and not give much weight to your doctors note. In any case, the amount of time and money that would be spent, for certain ,isn't worth it. Stick to the states that don't require a helmet, and for sure, bypass NJ.....