Personally, I hate to use a trailing stop because you're always getting out on a pullback. I would rather try to exit on an extreme move, with a failsafe trail of maybe 50% of open trade profit. Two rules that have helped me over the years are never let a winner go to a loser and decide if you can handle a pullback of the move without exiting. For example, if the ES has moved up 10 points off a breakout and you are long, if you can't handle maybe a 5 point retracement, you'd better start looking for an exit point. Otherwise, the typical pullback will shake you out at a significantly less favorable price.