u aint gota do all that to stop the run. just simply use the different 3-4 formations for certain runs and play MLB. if i cannot contain the outside run, i use 3-4 normal cu my guys are more spread out. if i can't stop the inside, i use stack or solid. stack makes it feel as though its a 4-3 with the way they line up, and solid is good for kinda being even with containin the outside and inside run. and 3-4 under is great if u have a hard time trying to get away from blocks by linemen, and line up with the FB when the ball is ran to the strong side.