This is similar to a model I've used. Here's an example using the "AND" rule: Change trade, Buy to Sell or Sell to Buy, when slope AND MACD directions coincide. http://stockcharts.com/h-sc/ui?s=TNA&p=D&yr=0&mn=6&dy=0&id=p97088996394&a=218617516 What are some other rules?