Coach,
First off let me say I look forward to your posts. It allows me to go back in time and remember the excitement that is involved in being a younger coach before all of the BS starts to build up. Let me offer a suggestion that I have always used to get them to understand what needs to be done. During the game on the back side of my lineup cards I track mental errors. At the start of the next practice we runs a sprint for every mental error. Prior to the sprint I will explain to them why it is a mental error. They truly don't know why it is important to have life in the dugout, get foul balls, and get a pitcher warmed up because they have never had to do it at the youth level. Just a thought.