As we talk about the shell, one of the things I told the convention was that I thought the best drills created the following:
1. Made players think -- this leads to anticipation which is critically important to good defensive play.
2. Made players see -- you have to have good vision to be a good defender and good drills stretch a defenders vision.
3. Made players communicate -- it goes beyond talking -- it's about communicating. Not talking for talking's sake. And of course, it's about listening.
PRACTICE CONCEPTS FOR SHELL DEFENSE
There are three basic thoughts in understanding the importance of shell defense and what it can do for your system.