First of all…WOW. I read the article and then watched the video over and over for about 10 minutes. Here are my thoughts:
Looking at the video…if it ain't broke, don't fix it. I'd be super conservative with this kid if I only had him for one season, because he does a LOT of things right. For this season, I'd focus on approach work and minimal jumping. He needs to get used to jumping in high jump shoes. I would avoid at all cost trying to get him to analyze technique. That can be done in the future, but for now, just let him find his own groove. Like Quik, I'd also want to know what sort of training his JV hoops has provided, then I'd try not to deviate too much in terms of introducing a ton of new stimuli. Obviously you don't just want him to play hoops for a workout all the time, but at the same time you don't want to beat the crap out of him trying to coach him down to 6'10".
I had a similar, if less drastic, situation last year in the long jump. The kid, a sophomore, turned out with four weeks left until the post-season. I'm a TJ guy, and our team needed the points to try for a state title, but we had to give up on that after one week because I could see that he was going to blow up trying to get it all. We went super simple and worked on approach work most of the time because he did a lot of other things right but couldn't find the board. Long story short: After seven weeks of track the kid goes 24'3" and wins the big-school state title. I was torn between being blown away and totally expecting it because I'd seen what he could do in practice. Now this kid is clearly a genetic freak so it's not because of my super-fly coaching ability that he went that far, but the thing I do pat myself on the back for was keeping it simple and dropping the TJ. (Besides…he was only a soph. As of today, we're a month away from beginning to learn TJ this coming season, and yes, it IS killing me to wait until then. 🙂 )
So, to sum up, the K.I.S.S. principle is king here. A jumper like that just needs to have consistent approaches, get used to jumping in spikes, and figure out that he can ALWAYS go back to being an accountant later, meaning his coach has to instill in him a love for the sport by not making it a chore.