I had a father I coached with LL that was a college pitcher...he didn't even throw them in BP. he would kick them off to the side and throw them out!! Ball snob.
The biggest problem my oldest found was being a left handed hitter with some power but not impressive speed was hitting a bullet on the screws and getting thrown out at first on a 9-3. That used to drive him crazy, especially in the spring with the lush thick 3" high grass, the outfielders would cheat in because they couldn't hit the ball far enough to hurt them. Even a bomb would stop where it landed and maybe be a double.
I do think 13u baseball would be much better with BSR's instead of the BBcore. At 14u things start to change quite a bit.
Son had the same problem. He was dragging an anchor!