There are techniques that I doubt I would ever use - especially those that are more fitted for the same-size-opponent situation. I'd never use them on a man or someone much larger than me. However, I might teach a larger man for whom a particular technique that seems worthless to many students might work very, very well.
Then there are those scant few weird techniques that you have to wonder, "who would EVER use that?" Down the road a few years, you find someone for whom they work and who can put them to use like you put your fave techniques to work.
I think it's a matter of learning the possibilities and intricacies and expanding the arsenal so you can answer that 4'9" student's question, "How can I do ____" or the big guy's similar question, etcetera.
My .02 ...
Then there are those scant few weird techniques that you have to wonder, "who would EVER use that?" Down the road a few years, you find someone for whom they work and who can put them to use like you put your fave techniques to work.
I think it's a matter of learning the possibilities and intricacies and expanding the arsenal so you can answer that 4'9" student's question, "How can I do ____" or the big guy's similar question, etcetera.
My .02 ...