I teach all of the girls how to be properly hit. I demonstrate how to turn into a pitch. I have one of them chunk a tennis ball at me (how they love hitting the coach!) and then I hit all of them with the tennis ball. Doesn't hurt, they know how to do it, all is well. If they get hit, which sometimes happens, one of the things we talk about (after the tears cease, we make sure all is well, etc.) is whether or not they turned the right way. Big grins when someone did exactly as they should, because they know it has kept them safe in the long run.