A Dunk Too Far

Work started today, and I weighed myself and took a very inaccurate measurement of my current vertical leap. With shoes on I weigh 168 lbs. I can't say if this is an appropriate weight for dunking - certainly many dunking NBA players weigh more, but they're also much closer to the rim. Comparing myself to some other under-sized dunk-capable players might help give me some guidance on how I can achieve my resolution, so I calculated my body mass index (BMI) and the BMI of some NBA players:

(height, weight, BMI)

Me: 5'11", 168, 24.1
Spud Webb: 5'6", 133, 21.5
Allen Iverson: 6'0", 180, 24.4
Nate Robinson: 5'9", 180, 26.6
Derek Fisher: 6'1", 210, 27.7

With the exception of Spud Webb, it seems that being lightweight does not offer any advantages - in fact, it looks like I'll be building a lot of muscle. Also, the BMI calculation is skewed against muscular people, such as the players listed. There is a body composition indicator at work which can give me a better idea of what I'm made.

As far as my hip goes, I am able to cycle at the gym for 15-20 minutes with very low resistance. The trainer there suggests I start sets of half-lunges and half-squats, which I will begin Thursday. Today I attempted a single vertical leap, using bricks on the wall as a measuring guide. I jumped seven bricks: about 15 inches. That leaves me 26 inches from the dunk...

A vertical leap isn't the final indicator: Spud Webb listed a 41 inch vertical but is 5 inches shorter than me. A running start will help - but I have no idea how long until I can, let alone put a lot of stress on the joint. I'm beginning to sense how much work achieving this resolution will take, but when I get there, I'm having a poster of myself made.