I have not been to a Savannah Bananas game yet but the whole purpose of that rule is to make the game fun again and to involve the fans in it.
Yep, that is a rule. And you are correct it’s to get the fans involved and make the game fun. My kids loved it when they saw them earlier this month. They had a great time!
I wonder if a batter hits a home run (not foul), and a fan catches it, is the batter out???!!!