What do you think of this guys opinion on it "you leave your arm almost fully extended, throw small jabs and push as you make space and keep your opponent at bay. The space-maker can be thrown multiple times as you circle around to your opponent’s right side. If you’re throwing multiple tapper jabs, leave arm almost fully extending as you throw multiple jabs to keep your opponent busy. It is VERY important to keep an eye out for your opponent’s right hand since extending your left arm leaves you vulnerable to punches on that side of your head. Also, ALWAYS be moving around when you use the space-maker; if you stand still and stretch your arm you will get hit with the hard right counter. (often used by Kostya Tszyu)
The Ultimate Boxing Jab Guide