Re: oyo henka
Our kihon dosa are practiced in sotai kata geiko. The usual level that students begin to randori is at yonkyu or sankyu when they have acquired some basic "vocabulary" that gives them some tools to be able to randori. We train kata in most classes with the last 45 minutes or so for randori and randori drills. Sometimes we do a full class in our more advanced practice in randori. Changing partners every 10 minutes or so. We also have open mat training times on the weekends where people often meet to randori or work on specific kata for an hour and then randori for an hour, etc.
The seiteigata practice in our system is made up of what we call "tandoku undo" (solitary posture and movement kata) with fundamental movements that are possible in aikibudo, a kuzushi and tsukuri kata called "musubi renshu", and we then have a sotai kata called "junana hon kata" (17 basic techniques kata), and also the "owaza jupon" (a basic kata teaching more advanced applications of principles), also a "koshi waza no kata", and then the traditional six koryu no kata that are made up of the early techniques from the pre-war period. Randori includes: futari geiko, taninsu dori, and tanto dori. We also have 3 boken kata and 3 jo kata.
Many of us also practice Shinto Muso Ryu Jo and a number of our more senior people are also practicing Tenshinsho-den Katori Shinto Ryu with Philip Relnick Sensei.
As you can see, we have a full plate...