That's the way son. I used to practise Wing Chun and Inch Punch but I guess I'm too old and lac for that now. Many years ago after ROD from police, me and an also ex-police friend was at a playground chatting and drinking. Four guys, ex-lockup detainees under us beaten up by us before came along to taunt us. Things like hey, no more warrant cards, no more guns, what the heck now etc. The sudden lightning strike of an inch punch settled the question for one and all. The other three dragged that knocked-out guy away without further ado. Me and my friend carried on stargazing, chatting and drinking.
Watch Way Of The Dragon. Not the famous ending Bruce Lee v. Chuck Norris fight. That's good but still exhibition sparring nonetheless. Watch the fights at the backdoor of the restaurant. Opponents are settled in matter of seconds. That's as real as streetfights can get in movies.
I'm no expert with Inch Punch, just bare basics, but enough to settle ruffians. Your grandfather, my father, was the expert, at least above half par with Bruce Lee.