An instructor should exemplify the things he seeks to teach. It will be of great advantage if you yourself can do all you ask of your students and more.
Boards don't hit back.
In Jeet Kune Do, it's not how much you have learned, but how much you have absorbed from what you have learned. It is not how much fixed knowledge you can accumulate, but what you can apply livingly that counts. 'Being' is more valued than doing.
Whether or not we can get together, remember well that art lives where absolute freedom is. With all the training thrown to nowhere, with a mind (if there is such a verbal substance) perfectly unaware of its own working, with the self vanishing nowhere, the art of JKD attains its perfection.