To me it’s a pretty good Indicator. Kids of athletic parents tend to be athletic from my experience over the years.I look at the swings of kids of fathers that I played with and you can’t tell me it’s by chance that their swings look very similar many times. Same with my kid, my Hs coach watched film of him last week and said right away it looks exactly like I did at that age. It’s not by chance.And yes it helps when I know the coach because I played against him 30 years ago. It’s not a huge topic of discussion but it does help break the ice if their is something common to talk about.