Okay I just had a real world situation to prove my point. I am doing film breakdown of opponent right now. I have them close to 70% pass on 2nd and 7+. I am watching a game live. They came out in 2nd and 7+ in big I right (QB under center, single WR split to the left, TE to the right, two FBs, and HB). In this formation I have them running 3 playes. Stretch to the strength, counter weakside, and boot to the weakside). The opponent heavily overplayed the run. They ran boot weakside and the inside Fb got into the endzone untouched. weakside LB and weakside DE lost all responsivity backside because they saw formation and thought run.