Playbooks

F Lead Read Option out of Pistol Strong Slot is a 21 personnel read option run play built around the QB reading the play side end. The diagram shows the fullback leading through the hole while the QB rides the mesh point with the HB, keeping the ball or handing it off based on the unblocked defender's crash angle, with the offensive line stepping in unison to the play side to seal the point of attack. This is a pure run play with no route concept attached, designed to attack gap integrity rather than beat man or zone coverage downfield.
Watch the play side defensive end or outside linebacker pre-snap since he is the designated read defender and his width will dictate keep or hand off. Check linebacker depth at the snap, since shallow linebackers who crash down hard on the fullback's lead path open up the QB keep lane. This play struggles against disciplined scrape exchange defense where the end sits and the linebacker replaces him on the QB, so look for defenses that train that rep specifically. Man coverage on the backside is largely irrelevant here since there is no route concept, so focus entirely on the box count and edge defender leverage. User controlled defenders spying the QB pre-snap are the biggest threat to the keep read, so if you see a defender not aligned to a normal run fit, expect the spy and lean toward the handoff.
Use pre-snap motion or a quick glance at the box count to confirm this is a run down before the snap, since this play lives or dies on numbers at the point of attack.
Identify whether the defense is in a 4-3 or 3-4 front pre-snap, since the read defender changes based on the alignment of the play side end or outside linebacker.
If the defense shows a hard crash from the read man every time, hot route the fullback to adjust his lead path or consider pulling this play from your call sheet for a series and going back to it once tendencies are broken.
Pair this with HB Power O and HB Counter from the same set to keep linebackers guessing between gap schemes and a true zone read look.
Best used on early downs (first and second) inside the tackle box when you need to keep the defense honest against aggressive edge rushers who like to squeeze the mesh point.