There in lies the rub....as the official keeper of the book I do my best to be honest and fair about it. I note all FCs, ROEs but do cut slack on hard hit grounders that are not fielded cleanly. An example would be a shot up the middle that is deflected by the P due to self preservation. Often when parents keep track if a kid gets on base it's a hit.
It is understood parents stats will not match team stats. Personally, I like Slug percentage, OB%, and like even more RBI's and Runs Scored, because to me runs are what the game is about. Stats have uses, just be careful, because the young ball players will make more of them than they really are, and can divide a team with a bunch of girls comparing stats, instead of pulling together and trying to win ballgames.
Older players understand stats are a necessary, and important part of the game and have been around long enough to take for what they are worth. Yet still pull for the team ahead of the individual.