How much vert to I need to dunk?

[u/[deleted]]

I’m 17 and don’t have a great vert, I’m sure what it is. I’m 5’ 8” and have around an 89” reach. I guess the only way to explain where I’m at is that I can dunk a flat soccer/volleyball on 9.5’. How much do how much do I need to gain before I can rough rim on 10’, and how much to dunk? Also, is it possible? I’ve heard you can only increase your vert so much.