Lyle Laizure wrote:
Nothing you can do. It would be inappropriate.
My experience shows that's not true. I have a pretty old and very respected sensei and lately some of students noticed that many practitioners fall back incorrectly, which can be dangerous. After discussing that with more experienced students who also noticed that, the student with the highest rank (who is also pretty close to sensei's age) approached sensei and asked to teach us some more of back falling since some students are not good in that.
Sensei was very open to it and accepted our point.
So maybe you can similarly discuss this matter with other guys in your dojo and if they agree, a group of you or a chosen delegate can approach your instructor and talk to him? I guess that greatly depends on your sensei.