This is a drill I like to do with shovels because of their mass which forces you to move with good posture and relaxation and because they can easily slash, stab hook and anything else. You either stand or squat or lie on the ground and using the 18.104.22.168.5 and than 22.214.171.124.1 you move to change each others form and breath as you move to keep yourself from harm. If you do this standing up you can become eager and sacrifice your form and mobility to gain a hit and a good strike to your head will help you learn what is more important (using the flat of the blade, remember it is a human being) Another drill that can follow this is one moving in with a shovel and the partner or more move without attachment to the strikes and moves to remain free. The purpose of the drill is more important than the actual details. I will post a video to illustrate soon.