I think I've figured out some of the techniques North used for shooting huge loads. When he's about to cum, he jacks off and pulls up and forward on the under side of the head of his penis. I think this might somehow draw more semen through the shaft of the penis. He also seems to sometimes be squeezing it and releasing it as he cums creating the effect of squeezing a running garden hose and releasing it after the water builds up inside. This probably came in handy when he had to shoot two or three loads in one day. But, I don't know for sure. These are just my observations. I've also seen some of his scenes where he pulls out of the girl's vagina and cums without jacking off at all or having her jack him off. I think it depends on how much he has in the tank.
Nothing like a Dame was one of my first porno movies I had as a kid. I swiped it from my friends dads house ? busted a nut to this scene so many times thanks for posting. God damn Tear was hot in her day!