no one's ever trained me... there was only one invaluable piece of advice i received back when... about using lead turns....
why don't you ask some good sticks to go to the da with you, simply for the experience you'll obtain from it... doesn't even have to be me. bnz is merely a skill that can be acquired over time, but how to defeat a bnz or make a reversal, well, those take a lot of dying to learn - no one has to learn them, but if they don't they'll be at a disadvantage vs those who do.
answer me this, how would you describe the style you fly? an honest assessment, if you will. and more telling, what do you do when you're at a disadvantage?