I think one thing you gotta consider, balance is only related sort to activity. It's like how if you do a bunch of, say, bicep curls, only your biceps will get stronger, your legs won't get stronger just because your biceps do. So it's the same way in my opinion with balance, your balance won't improve overall if you just do one type of balancing. Like there's obviously carryover to some activities, but specific balance issues need to be worked on by themselves, imo. Like there'll be some carryover in all balancing activities, but not as much as you can sometimes expect. Like for me, I ice skate, and I'm not a fantastic ice skater, but I'm definitely better than the average person off the street at it. Most people go "wow, ice skating, you must have good balance" and I still don't have good balance in some things. A big example is like, doing squats, I still tend to shift my weight to my toes, which is entirely related to balance, so even though ice skating is a VERY balance intensive sport, it didn't carry over to doing backsquats.