a proprietary price squaring trend strength super flux indicator..it'll make you a fortune if you could just get your hands on it.
Seriously..dont look for indicators. Its there, in front of you.
ive tried Flat trend before, (although it was a while ago) dont remember being over impressed, and only seem to remember it was possibly abit slow
use Macd myself and had one made for me on another well known forum
better of trying as many indis as possible - although there are approx 30,000