I use the visual backtesting feature of TopGun Software. If you put on an indicator you can adjust the settings with up/down arrow key. I use this to primarily adjust the keltner settings for the different time frames I'm trading. In backtesting it normally shows settings for highest profit. What if you wanted a system that had the highest win %? In that case it rarely shows you that, I find a high win% system much easier to trade than one that may make more but is optimized over past data to do so. Since my bands are adjusted to contain over 95% of price data I can scale into losing trades and break even MOST times. Every two to three months or so I take a clobbering but a part of my system I live with. Chris