See if they'll let you get away with "liquid chalk" on your windows. Chances are that there won't be that many other Vipers if any and they'll have no trouble figuring out whom you are. I put a number in the upper pass. corner of the front windshield, one on each upper corner of the rear glass and my class in big letters in the center of the rear glass. And for heaven's sake, take off your rearview mirror when running. You'd be surprised how much removing it helps.
Lou