Actually as a Jeet Kune Do practitioner and taught by a Si Fu accredited by Dan Inosanto the one inch punch is taught as a means to finish off your punch. the technique takes practice but when applied properly it brings the nasty for sure. I have demonstrated many of times to friends and family, not as dramatic as knocking someone off a chair but just putting your index person on someones chest like you were making a handgun and then quickly close your fist and snap it downward in the 1 inch range and you generate enough force to move someone its fact!!

Again the application is when you finish your punching motion you wanna snap that wrist like a whip on contact and it adds a whole lot of force. In Jeet kune Do you keep your hands up and open a bit while taking a traditional western boxing stance for trapping and intercepting purposes so when you drive off the back foot while snapping your hips, shoulders and lastly that 1 inch punch on contact the force generated is pretty amazing.

to put it proper percpective you are going to correctly apply the principle while defending your self in a street fight or confrontation, Bruce was all about effeciently neuteralising your attacker and stopping him in his tracks asap. attribute drills are taught in combos, whether its 1, 2's or finger jab, right cross and elbow to the face or muay thai combos utilizing knees or headbutts and kicks that should never go above the ribs. as long as it flows makes sense and can be seamless quick its all good. Remember you wanna strike and get your hands back up and body into position. No movements should leave you vulnerable by design.

Also you are usually taught to reverse your stance if your orthodox you are converted to Southpaw and vice versa. The purpose is 2 fold.

1) Since you wanna end the skirmish fast your initial jab or strike is going to be the most powerful since you reversed stances your Jab because a laser sharp power punch that sets the table for the other strikes to follow.

2) Leaves a mental imprint on someone because if you initially jab your way in before starting your combo sequences he feels the power of your supposed Jab and fears the cross that might come because the jab clean his clock the cross is going to feel like a freight train and he might not want to stick around. even though in theory your cross would be really coming from your naturally jabbing hand. That will be your secret

Its not a principal that was taught for a 12 round fight, maybe it would work I dont know? but try it Adam in sparring and see if it puts more sizzle on it. Another thing I liked is that it taught me to get my hand returned back for defense. When you snap your wrist at the end it makes your arm like a boomerang that coils back naturally