I Don't have a position in Gold now, but I will probably open one soon again. I would sell gold below the red line and I would be neutral above it. I would also sell when Gold touches the yellow line (tight stop loss above the last 2 lines); I would be a more aggressive seller if it reached the blue line. However once it is above the blue line, I would be bullish in Gold. I would also be a bottom fisher in GLD if it reaches around $100 (the bottom grey line)