I want to start with looking at Iaido, and one thing that strikes me more than anything is the realism in the form. One particular element demonstrated amazingly well by Ishido Sensei in the clip below is that once the technique has started you must not stop.
http://www.youtube.com/watch?v=E3vgvjYQdUI (Ishido Sensei)
http://www.youtube.com/watch?v=dGSNtW0nnUY (Takeno Sensei demontrating the link between the ken and Shiho Nage)
Shiho Nage is to Aikido what Mae (http://www.youtube.com/watch?v=sDfcu9BP5fI) is to Iaido. When we perform Shiho Nage we should be mindful that we should not stop the technique. Although studying the technique is important, perhaps we should appreciate that the lesson is that, the power development should be smooth and gradual, we should, just like in Mae, avoid jerky and unnecessary movements and that the final cut should be certain, definite and above all relaxed.
In specific relation to the Aikido, we can see how Shumatsu Dosa (both Ichi and Ni), is Shiho Nage.
What I think is important, and the relationship we can see between Shiho Nage and Mae, is that the cut or throw is not executed with the arms, but with the movement forward of the hips. Another interesting exercise to try is to perform Shiho Nage (http://www.youtube.com/watch?v=JAbuib2xO_c), apart from the final throwing movement. The reason for this is if you do it in an unbroken fashion (but still precise manner and certainly not rushed) then Uke will begin to fall without the throw. This will only happen if the movement is unbroken, the Seme (feeling) for the technique seems to carry Uke. This idea is highly transferable to Iaido, because if you stop the form then you tekki (invisible training partner/or real evil Samurai) will then have the opportunity to cut you down.
Shiho Nage, appears in many different forms in the Koryu Suhada (kimono) and Yawara (Armour) Jujutsu. This would indicate its power as a combative technique throughout Japanese history. The final element that we should make sure that we practice is the shoulder control, although Shiho Nage can be hard on the elbow and shoulder the target for the throw is the head and spine. The throw is highly destructive and as a result we need to find a way to practice is hard and intense but without hospitalising our Uke. Mustard Sensei and Saunders Sensei both emphasised the shoulder and body control, this was done with two strong entry steps and when turning taking the hand in a big arc over your head and not interfering with the power created. Kamae allows Shite to control Uke just before the final application of power, Uke should be able to test from this bent back position and not be able to overpower Shite.
To summarise:
- Unbroken movement
- Focus on shoulder control
- Strong movements forward with the hips