This spreadsheet demonstrates a Trend Following type trading strategy that uses retracement entries. The system has been tested on the S&P500 market and will perform better on markets that have a tendency to trend. Retracements are based on recent highs and lows and you can set the entry based on Fibonacci levels. The spreadsheet also has a Strength Exit. This system allows a trade to be exited after a set number of consecutive bars in the direction of the trade. The advantage of a strength exit is that you can take profits when the market is showing signs of exuberance. The strategy uses the Linear Regression line to trade in the direction of the long term trend.
If you want more information you can see the spreadsheet demonstrated in this video.