I've been with R4 for many years now. As it has evolved and gotten more and more detailed, it has gotten easier to communicated and teach to my young youth teams. They may not fully comprehend the depth of everything they're being coached, at first, but the foundations are being laid and they are solid! I use the language and the concepts for Quarterbacks and receivers, but also for my defensive secondary and Line backer. Most youth kids play both sides of the ball and figuring out "what is...