Be a person because you choose to be, not because you're intimidated. If you find yourself in a position where you have no other choise but to fight, do it fast and get it over with. He can't think of two things at the same time. Normally, a grown man will flinch because he doesn't like the idea of someone spitting in his face. An older person can fake a heart attack long enough for the opponent to hesitate and be caught off guard by a couterattack.
Surprise is always an advantage.
Kajukenbo emphasizes attacking the most vulnerable targets including the eyes, the throat, the groin and the knees. One or two moves may or may not be enough to take a person out. The kajukenbo strategy is to stike or kick a person, get him down to the ground, and then continue until he stops. I have been lucky to train in commercial schools and hard core headbanging backyard schools and has taught me the good points and bad about both. Or tell me the honest truth, thanx guys.