We have 6 new kids who have never thrown a baseball in their life and they desperately want to make the team. One has decent velocity (65mph) while the others are around 55-60. The guy who throws harder however puts everything into every throw and he gets tired quickly. I keep telling him to take it easy but I think he wants to impress us. How would you train these guys to get the most out of them? Right now they throw rainbows over trees during lunch time. I figured that's a good idea as that's what I did when I was a kid, but I was 10/11, not 15/16. Should they do any long toss or hard throwing at all or should they just play catch everyday until next year?