I'm looking for thoughts on the practical interpretation of kosa dachi stance. Kosa dachi is found throughout the Matsubayashi-Ryu katas, from the Pinans through advanced katas such as Passai and Chinto.
To me, having your legs crossed with one knee tucked into the back of the other is precarious. I do not accept the explanation that the practitioner is set up in this stance to deliver a uniquely devastating kick.
I do, however, appreciate the force developed when assuming the stance. The body weight is dropped, and frequently the arms are used to generate torque with an accompanying strike as the body is cork-screwed into the stance.
1. The crossed legs show you the relative position of yours and the opponent's leg.
2. The crossed leg is a hint that the cork-screwing motion should continue.
3. The weight-shift is a hint that your line of attack is shifting relative to your opponent.
All of these things, taken in any combination, involve locking the opponent up and throwing them to the ground.