what plays to fold on?

About 1/2 of the NFL teams fold on Inside &/or Outside Zones. G & T fold vs 3 technique on IZ or OZ = good!
Also TE & ON T fold a 7 tech & OLB on OZ!

when running the midline to the TE, I have the OT always block #2 - which may be a 9 tech when aligning with a TE. The TE folding inside the OT and blocking the LB is great scheme - instead of using a typical double slot formation where the PS slot blocks the LB.

We run a zone system with power and counter as change-ups. With that, I don't like to fold anything. I like a system that protects every gap and accounts for blitz. Folding eliminates the ability to effectively block blitz. They also take too long to teach. There is only one situation in which we will fold. That is on our stretch zone (our widest play) when we face a playside DE in a 7 or 8 tech, S stacked over the TE, and a safety that has come down to playside. In that situation, we have to combo our TE and PST to the S and have the lead back take the safety. We don't have an angle to zone the 7 tech to the S so, we will fold it. However, this is strictly situational and if the defense shows this look on a regular basis we will run away from it or use formations and/or motion to force them out of it.