Crowe moving average. Stanley kroll's EMA trading method, crocodile trading method and other methods, that is, discrete long, adhesive take profit or stop loss, the simpler the system, the more effective it is. Croema is an EMA trading system proposed by Stanley kroll, a famous American futures expert. Stanley krogh Trading System is better after filtering with krogh EMA. The moving average is the weighted average of the daily closing price, thus obtaining a trend trajectory.