Besides the "tidal technique" and my "trending technique", Jim introduced to me a third indicator that works pretty damn well.
It's the NYSE McClellan Oscillator and Summation Index. When the McClellan Oscillator moves above zero, it's a buy signal, and when it drops below zero, it's time to get into the G fund. The Summation Index is basically a derivative of the oscillator. When the oscillator is above zero, the summation curve is black. When it's negative, the summation curve is red. See below.
NYSE McClellan Oscillator (I drew in some green and red lines indication "buy" and "sell" dates. Obviously, you won't see these on the raw chart in the link below.)
Matching NYSE Summation Index (Buy black, sell red)
You can see we have dropped below zero and the summation index is red. A pullback is coming. Go long only when the oscillator convincingly moves above zero.
The NYSE MO can be found here:
And NYSE Summation Index here: