Yet another hand out from ASCA. I couldn't wait to get home and scan this, so I just took a picture with my phone. This should be readable on your computers and phones by zooming. This one is geared at Swim Parents and is published by The American Club Swimming Association. Good read and only a small time committment.
Basis - Working young athletes "hard" is necessary - sometimes working them hard can be fun for the athletes... even more important, we need to identify those athletes that find it fun... and even more important to THAT is finding out who responds well to being pushed and can apply it to other aspects of their life.