Basically, what we do is upon hiring, create a file on the instructor.
This file has his picture, address, pics of his wife, kids, where she works, where they go to school, as well as any other family members.
When the instructor leaves, we isuue what we like to refer to as "an incentive." This can come in many forms; a picture, an article of clothing, a lock of hair, a finger, ear, or a horse's head.
So far, we have never had any incident (that we are aware of) of a former instructor competing with us.
"My Gung-Fu may not be Your Gung-Fu.
Gwok-Si, Gwok-Faht"
"I will not be part of the generation
that killed Kung-Fu."
....step.