Playbooks
Stack HB WK is a Shotgun set built around a two receiver stack to one side with the halfback aligned weak, opposite the stack. That weak alignment is the whole point: the back sets up screen protection and swing releases away from the passing strength, so defenses that rotate coverage to the stack leave the flat and checkdown side lightly manned. Personnel is 11 (1 RB, 1 TE), with the tight end available as an inline blocker or a detached slot depending on the play art, which lets you run the same look as both a screen shell and a vertical concept.
Use it on second and medium or third and five to seven when the defense is showing single high with tight man leverage, since the stack release creates instant separation on Bench Switch.
When you read blitz or a heavy box pre-snap, ride the RPO Zone Alert Screen or RPO Power Alert Screen read rather than manually hot routing, the built-in alert gives you the fastest answer.
Motion the outside stack receiver across before the snap to identify man or zone, then commit to Curl Switch against man and Curl Flat against rotating zone.
Hot route the tight end to a drag or sit route on Double Corner if the middle of the field is open, giving you an underneath outlet when both corner routes are capped.
Save the screen package for after you have established the vertical concepts, and check the linebacker depth pre-snap: if a user is spying at eight yards, kill the screen and audible to Fade Out.