I calculate the zone by using implied volatility from the futures to solve for a one standard deviation price range. Then multiply that by 1.5 for the bottom and .75 for the top of the zone. To pick direction I simply use the Ichimoku Kinko Hyo. When the price is above the kumo I’m short, when its below the kumo I’m long. The success rate should hover around 50% but you’ll find that your average wins are normally bigger than your average losses. I close it at the end of the New York session


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