This a great asset to all positions on the football field. One position that is the most hunted in a game is that of a quarterback. Every defender on the field wants his shot at the quarterback, which is why he has to have superior footwork.
These Agility Ladder drills show how the ladder is the most effective tool for training footwork & quickness. These training videos were filmed in slow-mo to give detailed instruction. It is important to go slow on patterns until you are familiar with them, then increase your speed as much as you can without losing control.