What do you need as a coach?
Be sure you have a helpful game card with you at all times such as quarterbacks have on their sleeve or arm.
A good game card will not only have all your play calls, but will have categories that will get you a post up as needed and that tell you what plays you have that will get each position (1 through 5) a shot when you want one of those players to have the ball.
On the back of the card of on a special situations card you can have in your pocket or an assistant will keep be sure to have plays already diagrammed that are for special late game situations such as: when you need a 3 pointer, or a quick 2, or you have differing amounts of time on the clock to get a shot.
Be smart on what you chart and have accountable chart keepers. A possession chart can tell you the pace and momentum of the game because it will tell you how many possessions you have had at every time interval and once you know your best pace, you can tell if you are dictating or if the opponent is.
Momentum is revealed by a possession chart in that it shows how many times you and your opponent have scored or failed to score in the most recent possessions.
Other charted items may be the fast break game on both sides of the ball, the low post game (scores allowed/how traps have worked, etc), the pick and roll game (percentage of scores/stops), deflections, penetrations allowed, uncontested shots allowed, and whatever else you deem to be of real value.