Bottom line is, is what you are doing making you money? My answer (for me) is YES. Who cares that I don't carry winners overnight. My average win size to average loss size has grown over the past couple of months to greater than two to one, whilst maintainig greater than 50% accuracy. It's a slight edge, yes, but one I exploit by making many trades. The adage "let your winners run" is applied with respect to the timeframe traded. Your exit methodology will determine the right time to get out. Pretty simple.