The following is Ben's idea.
Football coaches are hired because of their motivational abilities and knowledge of the game, their general ability to build a good team. This does not necessarily make them good clock managers. Herman Edwards, our coach last year, was notorious for endgame mistakes. Coaches should hire an assistant whose sole job is to manage the clock at the end of the half and game. This is similar to how general managers now all have salary cap managers on their staffs. San Francisco was the first to do this, and they had a huge advantage in the late 90s, before other teams started doing the same.