Sorry to hear that. I've been privy to some yet unpublished info that indicates (at least to me) that Tomiki was one of those who did develop quite a bit of the internal skills while training with Ueshiba M. This was at a time when things were still taught as Daito Ryu / Aikibudo. Apparently the internal development and Aiki training for Shodokan was blended within Tomiki's theories and training methods on Kuzushi. A recent seminar with Shishida Shihan provided even more information on this for my own training. A lot of what Shodokan calls "warm ups" and "drills" include internal training elements "hidden in plain sight" an example is Shotei Awase when done properly.
Having said that, I know many Shodokan dojo focus on shiai and competition-specific training and if this is ones primary focus one can forget about developing internal skills imho. This is funny however, since resistance tanto or toshu randori provides a very good opportunity to test ones internal skills and Aiki imho both as Tori and Uke, simultaneously.
The Jiyushinkai are really good guys however. I respect what they do a lot. Would love to train with them sometime.
Happy training. Hope you find what you are looking for.
The school I was at didn't really focus on shiai at all. My instructor was a lifelong judo and jujutsu student, and as such, approached aikido from a very technical standpoint (though I wouldn't say all instructors who come from a judo or jujutsu background are the same way). As such, while we may have been developing internal strength, etc. there was no awareness of those things being developed as a function of our training
. It was never discussed, to the point where I thought IT was something separate from what I was practicing in Shodokan Aikido. As I look back on some of my training, I do see where the drills and exercises we did simultaneously trained distancing and timing, as well as reorganized our bodies, forming them to better express technique, which could be seen as the very beginning stages of internal training, I suppose.
Thank you, Mr. Amdur, for brining up the issue of internal training in aikido, in book form or otherwise. It's caused me to do a lot of thinking about my own training.