I use a method I have confidence in that is very good at determining when a trend is weakening and about to reverse down. I sold a stock short at about $500 and it is down significantly today. So I sold a put at $497 for about $3 initially. After it went down today I closed this put and sold another one for $5. I want to keep selling these until I think the stock is going to reverse back up. Other than randomly selling puts every time the stock goes down a few days, is there a better way of doing this?