Playbooks

Pistol Weak Slot runs 21 personnel out of the pistol depth, but instead of keeping both backs stacked behind the quarterback in a traditional two back look, it flexes the fullback out as a slot receiver to the weak side. You get a single back set five yards deep behind the QB, a tight end attached, one receiver split wide to each side, and the second back aligned in the weak slot. That alignment is the whole point: the defense has to decide whether to treat that fullback as a blocker (and keep base personnel on the field) or as a receiver, and either answer creates a problem. Leave a linebacker over him and you have a coverage mismatch in the slot. Sub in nickel and you are defending Counter Str, Power Option, and HB Blast Alert X Smoke with lighter personnel.
What separates Weak Slot from the tighter sets in Pistol is the built in motion package. Orbit Triple Option, Orbit HB Zone Wk, Orbit PA Post, Jet Pass Fk Zone, Jet PA Cross, and Zone Fake Jet all use the slot back in motion, which lets you read leverage and rotation pre-snap. Orbit motion across the formation tells you man or zone instantly, and the same motion sets up the play action shots behind it. Because the QB is in pistol rather than under center, the run game (HB Dive, HB Slam, Counter Str, Read Option, Lead Read Option) keeps full downhill timing while the option and RPO plays stay live to both sides.
The passing menu is deeper than most two back sets. PA Dagger, X Dig, Dig Wheel, PA Wheel Over, Smash Y-Corner, Roll Out Smash, PA Boot, and Slants give you high low zone beaters and isolation concepts for the split end. With the fullback removed from the box as a slot, your X receiver frequently gets a single high safety look with no help underneath, which is exactly the picture you want for X Dig, Smash Y-Corner, and the alert smoke on HB Blast. The Gadget tag is earned: this set forces the defense to defend option keeps, jet sweeps, and four verticals worth of route distribution from the same personnel.
Motion the slot back with orbit or jet on your first few snaps purely to diagnose coverage. Once you know whether they are travelling defenders in man, you can call PA Wheel Over and Dig Wheel with confidence.
Use HB Blast Alert X Smoke on second and short or third and short against soft corner alignment. If the corner is off with outside leverage, take the smoke throw and move the chains.
Against single high looks, go to X Dig or Orbit PA Post and hot route the slot back to a drag or sit route to occupy the hook defender in the throwing window.
Save Counter Str and Power Option for after you have hit two or three play action concepts. The linebacker flow you created is what makes the pulling blocks connect.
If you see A gap heat or overload pressure showing, get out of the deep play action calls and check to Slants or Roll Out Smash. Both get the ball out quickly or move the pocket away from the pressure.