Playbooks

Tight is the heavy-run compression look inside Split T, and it strips away every ounce of horizontal spacing that the base formation gives you. You are running 32 personnel: three backs (quarterback under center with a fullback directly behind him and a halfback stacked or offset behind the fullback in the classic Split T stagger) plus two tight ends aligned tight to the tackles. There is no split receiver worth respecting in this set, which means the defense has no reason to widen. That is the entire point. Tight forces the defense into a condensed box, and every play in the set is designed to attack that condensed box either straight downhill or off the edge before the defense can flow.
What separates Tight from the wider sets in Split T is the tight end alignment. Both ends are attached, which gives you two extra bodies in the run fit and turns FB Dive, FB Dive Weak, HB Inside, and Mtn HB Lead Dive into legitimate double-team plays instead of one-on-one guesswork against a stacked front. FB Toss and Mtn HB Toss get real edge sealing from the tight end instead of hoping a lone receiver stalks a corner. On the pass side, the compression is what creates the matchup advantage: TE Corner isolates an attached tight end against a safety or overhang defender in a coverage shell that was aligned to stop the dive, and PA Boot plus Fk FB Toss Rollout Lt and Fk FB Toss Boot Lt get the quarterback outside the tackle box while the flat defender is still reading the toss action.
The concept package is intentionally narrow and that is a feature. Mtn PA Dive and Mtn HB Toss give you the same pre-snap picture with different backfield motions, so you can run the same look and change the point of attack without changing sets. Because the two fake toss plays and the boot concepts all share a stem with the toss family, this set builds a genuine constraint tree: run FB Toss and HB Lead enough and the fake toss rollouts hold linebackers long enough for the tight end to break free on a play-action drag or corner.
Use Tight in short yardage, goal line, and any four minute clock-killing drive where you want to force the defense into base personnel and grind out four yard runs on FB Dive and Mtn HB Lead Dive.
Check the box count pre-snap: if the defense has six or fewer in the box with two high safeties, hammer FB Dive Weak or HB Inside; if they load eight with a single high, go to Fk FB Toss Rollout Lt or PA Boot and get the quarterback outside the pressure.
Establish FB Toss and Mtn HB Toss early so the fake toss plays actually hold the flow defenders, then run Fk FB Toss Boot Lt on the next possession for the free completion off the same read.
Hot route the backside tight end on FB Dive or HB Lead to a drag or streak, giving yourself a safety valve against man coverage and a checkdown against interior blitz that the base play art does not provide.
On TE Corner, read the flat defender: if he widens with the fullback release you have a clean corner window, and if he squats you should hot route the tight end to a seam or work the boot side instead.