I like to front toss for the batters. Really, it isnt too difficult, just have to practice like the team does. If not, one of the other coaches should be able to. I do have my pitchers and batters live. Pitchers try to retire the batters and batters try to get on. Screens are up if it is for reps, if it is for scrimmage we treat it like a game. JMO but I think it is the only way to create a game situation.