Yeah, I use SMA envelopes for this, and chop is not really a problem trading manually because I scalp the range using a one-minute chart setup. I could probably program an EA to do the same thing, but I'll need to wait to see if MT4 will give me the data for 1- and 5-minute charts once markets are open again.The idea is that Chop is usually within a Range, so the MA will center on that range and move sideways, so the MA's range is going to be a much smaller range than price, and when the MA stays between the High/Low threshold you set, it turns blue and outputs a "0", when it goes above the threshold it outputs a "1" saying its ok to go long and turns green, when it is below the threshold, it turns red, outputs a "2" to let my system know its ok to go short.