defending the trap

What I have taught D-Lineman that if you arent blocked by the man over you. In this case either the guard or a down block from the tackle is that you are gonna get trapped.

So I assume the guard releases inside and the tackle goes behind him to backer. So therefore his 2 major threats have just cleared the area. This is a glaring signal to the DT that the trap is coming. Well either that or he is the read man. So what I teach is for the tackle to squeeze down the gap by shuffling while staying square to the line, and then attack the pulling guard with your inside forearm. Therefore you will hopefully get a stalemate, and they you have a DT square to the running back. Hope this helps.

During our every day drills we line up our defensive line in different shades. we give them reach blockes base blocks pulls, cut and down blocks. We put our foot back to the side we are shaded on. If your 3 technique is the one getting traped and he plays on the defensive right side our left foot would be back if we play a traping team. this step aims for the V of the neck and when the block goes down the d-lineman hits him and will actually turn with him.. We tell our guy to hide and trap the trapper. We do what some people call wrong arm we call it outside rip. We do this drill everyday from spring on. If I ever ask our kids what do you do on a down block he says trap the trapper. If the trap is killing you slightly tilt your tackle who is getting trapped.
Golla

The first thing that I would work on is communication between your DL. The shade/1 tech. should give a "trap" call. The 3 tech., by attacking the PS guard, should squeeze down the B gap opening when the PS goes inside. With the 3 tech. not feeling pressure from PS guard he must prepare for either a down from the tackle or trap block. Keys are to stay square to LOS, attack trap when diagnosed, and not create a vertical lane by running up the field. We spend an individual period working on different trap schemes: short trap, counter, etc.