I thought you said trading was simple ak15? winning is the rule , not letting your winners run and cut losers short ,this may or may not be a good idea , unless you have a winning strategy , ( knowing when a trend will continue or not , depending if following or reversing strategy) i suspect your rule will make very little difference in the long run , whats more a lot of successful traders fade the market , trading reversals , where a belief that trends tend to come to an end at some point , is required!!