I personally have alot of my trading setups based on the TICK for the YM. However, I do use it to judge internals when trading the Russell as well. Im still new to the ER2 so I'll need some more observation to judge correctly.
However, there was an interesting setup on the ER2 the other day. Notice the chart below:
The chart shows a strategy based on TICK. The basic concept is that in an uptrend, an extreme reading of +1000 or more indicates strength and a continuation of the trend. Price will usually pop for another move. My entry signal is usually on a price pullback after an extreme +1000 reading with timing on a TICK hook.