I have my own set of indicators - they only exist on my spreadsheet, far as I know. I developed them several years ago because I wanted something that was not readily available. They worked beautifully until the crash of 08 when they failed miserably. Actually cost me back then because I didn't expect them to fail. But since the crash, they seem to work again.

In bull markets, they generate buy signals for true intermediate term bottoms, in volatile markets (like now) signals are shorter term. For example, I got buy signals on Aug 22, Sept 22, Oct 3, & Nov 23. And apparently, my indicators simply don't work in severe market crashes.