Actually, TRIN, TRIX and other indicators don't correlate well with ES and NQ. I did some backtesting and had 48% 1 min. bar to bar a few weeks back. But it does help you when you want to filter out min. to min. fakeout entries.
I think I used:
On the 1 min.
If TRIN > 0 and *Buy Signal* then Buy;
If TRIN < 0 and *Sell Signal* then Sell;
TRIN > TRIN[1] and TRIN cross over 0 didn't work so well.
But it all depends on the system. I was using a very short term MACD for the filtering test.
Just my 2 cents