I heard there is a popular strategy to sell naked put and then, if assigned, sell covered call, if not assigned - sell put again. Let's say stock is $50 and I sell 50 strike put. After a month stock price is $45 and I am assgined long stock at 50 and position now is -$500. Next if I sell 45 strike call and the stock rises and gets called away from me at 45 I will fix a $500 loss (minus money got from put sold). But if I sell call at 50 hoping that stock will grow, there is almost no any juicy at 50 strike call and selling it is useless. Also it's possible that stock will not go up. How do you use this strategy profitably?