You may not be doing it correctly as a kick. Sort of like the front kick. A lot of people say the front kick is used to push or to create difference. However when I do the front kick, I'm thinking "break ribs" and not "push". My front kicks don't push. The best description I've heard for the type of front kick that I do is, "Like trying to kick a door in." I think if you approach this kick in a similar manner then it will no longer feel like you are pushing.
I understand what you say and I agree! The front kick can be done in both ways, depending on purpose and distance. The rib breaking version we avoid in friendly sparring, but only practice that one myself on the sack or mitts.
The problem is that to break a rib, you need to that last extension to get ultimate power? (whay old okinawan karate calls "chinkuchi" which is not the same as "kime").
This is what I TRY to do with the turning back kick, BUT it doesn't work at close range; a full extension kick is not possible at short range, thereof the weird hybrid I think. What is wrong and right I don't know, I am starting to think they are all right but have different purposes. I focused only on the "breaking rib" kicks, and ignored the hybrid ones, but slowly see how they are useful. I guess this tells more about my own early learning process.
I also don't think it's easier to jam because of how the kick is set up and because it travels under the field of vision. Anything that travels outside of the field of vision is rarely stopped.
Yes I agre on the field of vision part, but what I had in mind is how I myself stopped this kick (when others to it to me). I raise my knee like you do when blocking a body kick. If you do this early, the only energy of the turning foot comes from rotation, there is not time to extent even a bit before you block it. So you can block it without any pain, and a bonus is that your opponent may loose balance if you move forward.
The true back kick, comes from below and is harder to block this way in my limted experience. But that version is harder to do close range - unless you don't mind kicking the groin! In self selfence it would be awesome but not in sparring.
The other thing to understand is that this is a close range kick, meaning that it's a kick that is done within your opponent's punching range. He's not jamming it. no one expects to get kicked from that range especially if you are defending against punches before the kick.
Yes this is true.
I feel I learn alot about this the last 1-2 weeks. The other day I practice this on mits and sack, and I realise that it takes significatly less acrobatic skills to make the jumping back kick using this "close range" version. As if you jump, spine and want to extend for full power version, you loose height I end up kicking knee height only; again not for sparring.
I am 210+ pounds and back issues but found it doable to do the jumping back kick (close range hybrid 180 degree version) and at least get to liver height. I was surprised to realise that once I got my head right, it was not overly difficult.
Previously I have been tyring the 360 version of spinning jumping back kick (tobi ushiro geri) (full power, extension) and that is very diffult for me to do aboev knee height! I now realize that many of the higher ranked don't even do that, they do the close range 180degress version. Which is also significantly faster.
So this was a good learning week for me!! thanks everyone for helping out with my questions!