Here is a chart with the double DSS indicators. One is fast and one is slow. The objective here is to capture both the short and medium term highs and lows in the market movement. This is a type of "double confirmation."
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In this particular example you see the indicator working. However, before you use an indicator like this you should make many observations and count the number of times that it worked and that it failed. You then need to overlay your money management onto the indicator. Even though it works, it is possible that your money management could have stopped you out early in the trade and you would not have had a winning trade.
Trade safely!