i have my dads old books from when he coached our church softball team. we found them in a filing cabinet in the basement a good number of years ago. one day i looked through them just to see how good the old man was. the field they played on was the exact same field we play on today. early 90's was when he stopped. i noticed very quickly that very few hr's were hit season to season. by either teams.
now it could be just church you say, of course noone hit in church. i coached church for 10 years and we used up our 3 hr's pretty regularly. remember, back then there were no HR rules because there was no need for them.
I'd contend that hr's were not as frequent even with aluminum and blue dots as they were in the 2000's or even today with the balls we have. Sure you had the Steeles teams and the major teams who were all hulks of men smashing 30 hr's a game.
when you have guys today who are hitting hr's that would of never come close in the 80's and 90's you get more egos. and with more egos you get more of the goofy **** like hitting middle.
Egos is a good word, because some of them just become dbs when they get butt hurt or disrespected in their eyes.