I'm interested in what you have to say about the Art of Sparring, if anyone wants to share.
I try to get my class into some "aikido-sparring," or randori each class, but it flows in and out on the mat time I can devote to it with the ebb and flow of what the students are working on. In a perfect world, I'd just extend class a half-hour every night and we'd do nothing but work on some part of randori in that half-hour. But... people have things they have to take care of... like jobs... and kids... so way too often it's less than 5 minutes.
Right now in my student group, I'm limited due to the knowledge of the students, meaning they don't have much experience beyond aikido, so they are progressing in the actual "combat" skills as you'd expect them to, i.e. slowly. The only outside skills in the group are that at different points in their history two of them got up to a green belt in TKD, and a different one has a green belt in judo. We do a limited form of sparring we call hand-randori, which is simply a slow-moving, so the people can actually understand what is happening, and why, while they are moving. In terms of the other full-bore sparring I've done, it's very limited as suits the skill and temperament of the student body. It is hand exchanges only, slowly performed, working to try to get wrist locks/armbars, putting in strikes when the opportunity arises, everything you'd generally expect. But, most of you probably wouldn't actually consider it sparring. These people just aren't ready - though oftentimes they think they are and I'll oblige them by going a bit faster, a bit faster etc until their eyes are wide and I'm giggling as I know they don't have a clue what's going on. Then, I usually get them to step back and my friend the foot sweep shows up. They're usually frustrated, sometimes more than a bit miffed, and they ask, "Why'd you do that?" or "I didn't know using the feet was allowed." to which I usually reply, "I didn't change the rules, you did. You wanted to go faster, so we went faster. But, speed isn't the only learning rule we've got... would you rather that I kicked you instead of the little sweep?" or some such. I'd enjoy a group who "could" go a long way down the speed-power curve, but with this group folks would end up in the hospital. And then I'd loose my student... my dog would die... my wife would leave me for harmonica salesman and the rear axle would fall off my truck.
Just kidding, I don't own a truck.
Randori is where you take the tools you've learned (techniques) and you try to use them. Key word being try. It's experimental, chaotic with order being attempted to be imposed, all of that. In progressive resistance theory, it's moving along the curve towards getting attacked and trying to defend yourself successfully... though it's not really all that far.
Movement drills, release motions (which work out to be blocks against striking attacks, too... just don't tell the students), then the kata techniques and the always-arising, "How would this work if the bad guy Zagged instead of Zigging, like we do in the kata?" Which leads into principle explanation/exploration, and tons of repetition for muscle memory, trying to instill the principles "in there" instead of a list of thousands of techniques.
Judogi, done. Well, mostly. When working on koryu we work against tanto/ jo stick and boken. It's stylized however, and does not resemble any of the more effective (imo) weapons systems.
As stated above, I'd like to get a group of these folks up to shodan, then branch them out sideways into some of the judo. Once they can move and flow in & out of the different ranges and be comfrortable with that... this is going to sound weird but it makes perfect sense to me... I'm going to start working in some Muay Thai training. Not the conditioning, they'd die. But, the low kicks, elbow strikes and boxing work, the simple stuff.
But, that is probably at least 7 to 10 years off.