This thread is after all talking about 14 yo trying to hit a round ball with round bat. I have a hard time getting my 14 yo to consistently be a student and he supposedly practices that 5 days a week for 6 hours. I know he can't consistently get the optimum launch angle off of his bat quite yet. I do not deny Kris Bryant and Ted Williams try/tried to elevate the ball for HRs. They are elite hitters with grown man strength. I don't believe a 14 yo will consistently have the functional strength to do this consistently at an optimum launch angle. For my 2020 I just want the bat to stay through the zone long enough for line drives into the gaps, good things tend to happen for him if that occurs. I also found this tends not to cloud his mind with over analysis during games.
I also have this same line drive approach with my 2017 who does hit HRs. His HRs are big boy power alley and not 337ft over the LF fence. He is a lot closer to man strength than my 2020.