We enter when the price reaches the purple band of the "MMA" (Multi-Moving Average).
Possible exit : X pips above/under the bands. Otherwise trailingstop activated after 15 pips.
Other conditions : all red and purple averages must be parallel, they have to be sorted from smallest to biggest for UP, the reverse for DOWN. The yellow band should not be totally included into the purple band.
Timeframe : ideally M15. It could work with all, but for smaller timeframes, we will have to consider red instead of purple.