ADX (Average Directional Index) and similar tools show a little value (ADX Strategy Review ). Any other preferred methods to measure strength of a trend?
Bollinger bands might work as well. Once they bands are narrow you know you reached a ranging period. Wait for the breakout in the direction of the main trend.
OxfordStrat - The inference behind your question is that you have a large number of charts to compare in order to select targets for trades. If I'm right, are you happy such a large range is really optimum?