Girls jump significantly lower and are much less powerful than guys. It reminds me of watching people like Edey or Bradley dunking it. When you are jumping 10 inches off the ground to dunk it, it doesn't add any excitement. I don't think I have ever seen girls in the local neighborhood or anywhere play dunk ball, even ones that are really into basketball. Girls just aren't into dunking the way that boys are. We played it all the time growing up on 8.5 or 9 foot hoops.