I see alot of people of people thinking that naruto's training will be a simple solution of adding more KBs, spinning and forming the chakra at the same time, or forming wind chakra first then spinning it. And while that's all fine from just a purely logical standpoint. I'm putting 10 to 1 odds on it not being that simple at all. Here are the key facts to why it can't be any of those 3 solutions (especially switching the order and doing it at the same time, even the more KB is a far stretch for me to accept). Kakashi and the 4th didn't figure it out. Here I will say it again Two prodigy ninjas failed at figuring it out. Kakashi had the rasengan completed for over 15 years, and in 15 years he never figured out to try switching the order or use KBs (Especially 3 years ago a random genin showed that using KBs made making the rasengan easier.) Seriously after like my 5th try I would have tried forming it at the same time or switching the order. Could any of you really expect Kakashi to not figure that out after 15 years and especially 3 years ago his subordinate showed that if you use KBs it makes the jutsus easier to create. Even if Kakashi never thought of that before, anyone with common sense would have been like hmm I wonder if that would make adding an element easier. Now onto the image that so greatly points to using more KBs or trying to spin and create wind chakra at the same time. Now looking at it shallowly it would have to do with either using more KBs or trying to do two opposite things at the same time. But the key is kakashi is shocked that naruto got something from his example. So as I said before I'd put money on it 10 to 1 Kishi is going to have some complicated solution, remember naruto is a clever kid and is probably thinking outside the box with kakashi's example.