30 minutes of sanchin, 30 minutes of sabaki, 1 hour of tenshin
The rotation in tenshin from sanchin or seisan dachi can be broken down into two motions: as the hips turn it becomes neko ashi dachi then you swing the leg behind to a kosa dachi before completing the rotation. In sanchin dachi it is important not to raise your tanden. In seisan dachi it is helpful to think of the kosa motion as a rotating trip to the opponent's leg. That feeling of attacking will give the motion the urgency necessary to complete the turn.
Did I ever notice that sabaki 5 is the same motion as the shuto-haishu kamae in ni-sei-shi? Sabaki 5 needn't attack only to the side or from a rotation. There is so much to learn even from the things that I think that I understand. Truly, Budo is depthless.