I was able to use the hook kick in a spinning manner with some success. It was a powerful technique that I had a little trouble controlling.
That sounds pretty good to me.
I haven't practiced that yet. In fact, I haven't seen that style of hook kick practiced at all in the classes that I've attended.
If I pass my green belt test (whenever they decide on a test date) they'll get me started practicing spinning crescent kicks. When the time comes where I feel comfortable with it, I'll ask my instructor about his thoughts on a spinning hook kick. Since his attitude seems to be pretty liberal with trying different things, I wouldn't be surprised to see him incorporate it into our training to some degree.
Our training seems to vary to some degree. When I started, we did a good deal of groundwork, then we hit bags more, then we went back to traditional drilling more. Now we're getting back into more groundwork.
I don't know if that's a planned sequence, or if he's trying to see which style of training certain students respond to.....
It doesn't make a difference to me because it's all good training, but it's a pattern that I've noticed in our school.