how do you attack 4 weak?

I think you could check to a sprint out away from the four weak side. You ought to have cover 0 if you are getting four weak rushers. The two receivers run the smash concept to the side you are rolling to. Tommy Bowden has a tape which shows a simple protection that would have the back blocking the edge you are sprinting to. The entire OL slides to the sprint side (no turn back). He shows examples where the backside DE is completely untouched. As long as the QB throws by his fifth to seventh step, he can get it off clean. The corner route ought to be a big gainer against this type of coverage.