Playbooks

Doubles Y Off Stack lines up in Pistol with two receivers split wide to each side, but the difference from a standard Doubles look is the tight end sitting off the line stacked behind the slot. That stack alignment is the whole point: it kills press coverage on the inside receiver, creates automatic free releases, and forces man defenders to declare their leverage before the snap. The running back sits in the Pistol depth behind the quarterback, which keeps your run reads honest in both directions and hides the mesh point better than under center or straight shotgun.
The 11 personnel grouping means you keep a real tight end on the field without sacrificing four-receiver route distribution, so defenses often stay in base or nickel and give you a linebacker or safety on the stacked Y. That is the matchup you hunt with this set. Jet motion plays (Jet HB Zone, Jet Touch Pass, Jet PA Boot, Jet PA HB Wheel, Jet PA Y Leak, Jet Wide Zone Wk) let you use the stack as a motion source, forcing the defense to rotate and revealing man versus zone instantly on the way to the snap.
Concept-wise you get a complete package: zone run game with Wide Zone, HB Split Zone, and Jet HB Zone, gap-neutral misdirection with HB Draw and Read Option, RPO Zone Alert Bubble for the numbers game, and play-action shots off Jet PA Y Leak and PA Post Shot. Flanker Spot and PA Cross give you the short-to-intermediate West Coast answers, while Four Verticals attacks single high with the stacked Y running the seam against whoever is left in the middle of the field. HB Slip Screen punishes aggressive edge pressure that this set invites when defenses crowd the box.
Read the stack defenders pre-snap: if both trail the stack after a jet motion it is man, so go to Four Verticals or Flanker Spot with a hot route corner on the stacked Y and let the free release win.
Against single high with a user in the middle, use Jet PA Y Leak or PA Post Shot to pull the user toward the crossing action, then throw behind him, but check your protection first and block the back.
On second and medium, alternate RPO Zone Alert Bubble with Wide Zone from the same look so the defense cannot guess run direction, and take the bubble any time the nickel walks inside the tackle box.
Call HB Slip Screen after two or three shot plays from this set, especially when the opponent starts sending overload blitzes at the empty side of the protection.
Use Jet Touch Pass and Jet HB Zone as your tendency breakers when a user commits to a hard edge on the run side, and audible to HB Split Zone if you see a heavy one-gap front with the ends pinching inside.