i pull my foreskin right back and wank with the pads of thumb and first two fingers at the base of my cock.the first time i did this i shot over the mag.thats about 12 inches.dont squeeze too tight as you come.just closes your tube a bit and increases the pressure.

Kegel exercises will improve your ejeculatory power. Check this website for advice: http://kegelexercisesformen.com/