I am curious as to whether these two styles differ in terms of arm/hand position during a roundhouse kick. I've been taught to whip my arm in an opposite direction of my leg which makes as it generates more power. Some are telling me to keep both of my hands up by my face in case of a counter, or at the very least to extend it forward, but to keep it up. This feels very awkward and watching most Muay Thai and MMA kicks I see that fighters most often whip their arm, dropping it low. Is there a correct technique when it comes to the same-side arm when doing a roundhouse kick? Is this a matter of different styles? The guy telling me to keep the arm up competed in kickboxing back in the day.