This is why the wishbone is successful at running the ball. You can also create angles of force intended to create compromise. T have lines of force between the FB and the HB that create a power attack at the gap between the splitend and the offensive tackle. This allows you to pound the defense on its weak side. That's why, if you read the high school coaches boards, you see so many requests for information on how to stop the wing T buck sweep.
Some formations use motion to set up their line of force.
And they can adjust this line of force to either side. That's why you see board questions asking how to stop this attack. Now that you know about lines of force, you need to know about lines of defense. Using your own defense, draw a line between the LBers. Now draw a line between the free safety and those same LBers.