OK, that makes more sense. I think I figured out what he meant by riskless system.
He sells a strangle that is skewed to the call side thus making the downside move completely protected. So the stock could have fallen to zero and he still wouldn't have got hurt. He was safe between 0 and 70 for a $35 stock. Assuming a 50/50 chance for the move, that is not bad. Of course this system isn't riskless, and above 70 the Big Hurt would have started, but it is an interesting concept...
He sells a strangle that is skewed to the call side thus making the downside move completely protected. So the stock could have fallen to zero and he still wouldn't have got hurt. He was safe between 0 and 70 for a $35 stock. Assuming a 50/50 chance for the move, that is not bad. Of course this system isn't riskless, and above 70 the Big Hurt would have started, but it is an interesting concept...