5 man mechanics

[With_Two_Flakes]

In 4-man, I advise my guys to go no further than 50% of the distance from the LOS to the deepest guy on their side of the field. Stay with your body shape side on to the field and move with a boxer shuffle side to side. Once the ball is in the air, then you can turn to face downfield and pursue (if indeed it does go to that deep receiver).
While the ball is in the air, you can move further than you think to shorten that distance between where you are and the deep receiver.

In a 5-man with the extra help deep from the BJ, there is even less need for you to be dragged deep, so I advise less than 50%.

Football is essentially a conservative game, the majority of plays are runs and even when they do pass, it is generally short or medium range attempts, so I feel that officials should play the percentages accordingly.