Dollyeo Chagi(Turning Kick or Round Kick) is important and difficult in Taekwondo.

Important: Dollyeo Chagi is main technique of Taekwond competition, for it is very fast, simple, and changeable. So it is most often used in Kyorugi.

Difficult: This Chagi look simple, so it is difficult to find some faults in bad motion. And it is also easy to make good sense of kicking with this technique, but difficult to succeed in kicking the opponent(living man) in actual case. I mean, your motion will deceive you in training, while you can not find it easily.

My recommandation is; you should get full understanding of Dollyeo chagi, and try to seek your own problem and correct.

My correction tools will be helpful.

To See Analysis of Dollyeo Chagi

Compare this with General Problem of Dollyeo Chagi

This demonstration motion doesn't move his fore foot before his kick. But he also has less serious fault too. He moves his left hand befor right Dollyeo chagi.

Compare this with Another General Problem of Dollyeo Chagi

This demonstration motion doesn't move his hip back(his right) during his kick. His hip just moves forward, spinning.