Although I often post charts on chart.ly that can be full of indicators and lines drawn in every direction, there are times where I try to keep it very simple. Here is one example of a chart that shows a simple approach at getting long a stock:
As you can see from the chart, POR (Portland General Electric Company) is in a well-defined up trend. With this chart, one could open a new long position and use the 20 day moving average as the stop.
Let it ride.