So I suggest that our next 'group-think' task is to figure out how to incorporate an Automatic Stop Loss mechanism into AIM. You may want to start reading up on Welles Wilder's stockcharts.com/school/doku.php?id=chart_school:technical_indicators:parabolic_sar Parabolic SAR . stockcharts.com/h-sc/ui?s=$SPX&p=W&b=5&g=0&id=p54296688867 chart As with most indicators, the signal quality depends on the settings and the characteristics of the underlying security. The right settings combined with decent trends can produce a great trading system. The wrong settings will result in whipsaws, losses and frustration.