Re: extension and ma-ai
interestingly enough last night I was practising my Shodan kata with the head Shihan of our club and when we got to Tachi Ate (standing strike) he said he was going to 'unlearn' me in the way I was taught it as a beginner. He told me the technique was just a simple exercise in the principle of distance. While he did not use the term maai I believe it was the same principle. Apparently in the original Hakkoryu waza it was designed to teach students the appropriate distance to strike an opponent. I've heard alot of teaching on bodyweight, posture and technique but rarely distance, so it was refreshing to learn that in Dentokan/Hakkoryu the basic martial principle of maai is woven into the waza.