drop bear
Sr. Grandmaster
The piece I disagree with is that you should never use the ball of the foot for a hook kick. Even if you are on the side that the heel is stronger, the ball of the foot at least has some advantages in reach.
That is definitely a factor. Hitting with the ball is better than missing with the heel.
And you can throw it in sparring. So you can get better at hitting stuff with it.
Accuracy is super important when throwing head kicks. The leg is a huge mass you will probably hurt a guy regardless of what part of the foot you hit with.
Andy hug with the axe.
He seems to tweak his foot to hit. So heel if he can but does a bit of a toe slap if he needs to make that extra inch.