Obviously you can see the field better, the plays develop, the defensive alignments, etc. from the booth. What is gained from being on the sideline other than I`m sure it must help with communication, teaching players maybe easier? Why do some prefer one over the other for those who know more football than me, which isn`t difficult. I`m not being critical of either, just trying to understand what the pros/cons are & how they might decide which way to go.