70/20 rule - take 70% off the table and let 20% ride only sell if it turns, rinse repeat, once you hit your target on the 20% remaining, take off 70% of that 20% and let it ride.  If it reverse just go short.  Of course this depends on the size of your position.  If you are under 10,000 shares then do what ever fits your investment strategies.  Trading is different than investing