Playbooks

Not in any team playbook.
Mtn H Angle N Out is a Shotgun Split Y Off passer play out of 21 personnel that uses pre-snap motion to shift the H back into the backfield before the ball is snapped. On the snap the H runs an angle route out of the backfield to the flat as a check down and man beater against linebackers, while the near receiver on the boundary runs a deep out breaking toward the sideline and the two receivers to the play side stack a corner route over a deep out for a natural high low combo. The primary read progression starts with the corner and out combo on the play side, then works down to the H back angle route as the safety valve if the deep routes are covered.
Watch the motion defender before the snap, if a linebacker or safety follows the H back in motion that is a strong indicator of man coverage. Key the flat defender after the snap since he has to choose between the angle route and the deep out, creating a natural conflict in zone coverage. Look for the corner route being taken away by a deep half safety, which signals two high shells and means the underneath routes become the priority. Identify blitz packages by watching linebacker depth at the snap, since a crashing linebacker leaves the angle route wide open for an easy completion. Man coverage with no safety help over the top is the biggest vulnerability, as the corner and out combo will stress a single defender vertically and horizontally.
Use the pre-snap motion to identify man coverage if the defense follows the H back across the formation before the snap.
Attack single high safety shells by hitting the corner route first since the deep out underneath should hold the corner defender.
If the defense shows two high safeties, work the deep out and angle route combo since the flat area will be softer against zone drops.
Hot route the backside receiver into a quick slant or drag if you see a blitz look to give the quarterback an immediate answer against pressure.
Pair this play with Mtn H Angle N Up in the same set to keep linebackers honest, since both plays start with identical motion but attack different depths.