Re: Blind Aikidoka
Not long term, but I've trained at seminars or while visiting places w/ 2 different folks who are blind. both very enjoyable experiences.
Main thing with each of them was that I had to be very clear, in either role nage or uke, about staying "sticky" in physical contact or my partner would have to come "looking for me" which meant some potentially nasty atemi! and it is incumbent on the sighted partner to ensure clear paths for the blind partner esp for ukemi.
Don't know if it is coincidental but both ended up training longer term not in aikido but in aiki-jitsu of one or another form, where there is more pinning and control, less throwing into space.