[Bob Proctor]

Totally agree with Mike and Crowder! I do prefer the pointing down signal however since it is a completely undefined signal to the sidelines and fans AND announcers. It relays a clear signal to the crew and yet gives nothing to anyone else. A thumbs up might indicate "I have a touchdown" to a coach, but pointing down only indicates that I can see the ball down. The explanation to the coach is that yes, the Umpire saw the ball down but it's still the flank's call as they have the best perspective relative to the ball and the goal line.