We have run accross a nifty indicator that is best used in conjunction with what ever you are using that is already working for you.
This nifty indicator tells you when the market is going in a specific direction and about how long it will continue to do so. Best of all you can test drive it as long as you like and see it work in real time.
Just google andrewscourse or innovative geometry and click upon charts to get insight.
Disclosure: I am short SPY, .