I started as an average jumper, neither poor nor exceptional in my jumping abilities. As an avid basketball player, and perhaps an even more avid jumper, I have always wanted to dunk- No, not just dunk- fly, glide, float, defy.
I spent hours, weeks, and years trying to maximize my explosion power. I used the Strength platform shoes, AirAlert, plyometrics, stair running, ankle weights, and anything else I could get my hands on. Consequently I had a decent vertical, and was in excellent shape. Yes, I could dunk, but at 6' 3" I wanted to do more than just dunk.
But despite my hard work, and hours of training, I couldn't quite get there. I have never known anyone who had worked as hard in order to achieve a high vertical. I am sure there is someone out there, but I have never met him or her.