Re: Kokyu development for Aiki in Aikido
My understanding of the "suit" aspect is pretty elementary but I think it would have to do with keeping the pressure/connection in your own arms, rather than uke''s. If you're developed enough I think this pressure is what keeps your arms stable, rather than muscle.
I'm personally, not a big fan of the startle effect. It depends too much on individual response to stimuli. Some people could hold on for dear life, but others' instinct could be to retract and let go.
One thing that I was working on before my hiatus was using my intent to affect my partner. There is a tangible feeling in both parties when it's done correctly. If I could effectively direct my intent into uke through arms and touch their center with mine, I found I could make them do some interesting things. I couldn't always pull it off but when I did i definitely saw the potential for such training.