My EA does ignore < 50% and > 200% ATR candles and uses the top and bottom of the wick for long and short trails respectively. Soon I will add the option to select days that it places trades. EDIT: I guess by "soon" I meant right away. Here it is, ...
EA — I threw together a quick EA as well. It doesn't make retrace trades but it goes long and short and uses your trailing stop of the high of the previous HA candle. I set it to only have one pair of trades open at a time. It does not seem to ...