Purpose of the beanbag....

[FTVMartin]

It marks an important spot that we may need. In the case of a fumble, we are marking the end of the run. If a foul occured during the run before the fumble we may need that spot to enforce the penalty.

example: facemask on the defense during the run but before the fumble. the enforcment spot is the end of the run. if the offense recovers the ball down field they would decline the penalty. If the defense recovers, we will give the ball back to the offense and penalize from the beanbag.