Quote from Pr0crast:
I mainly look to do it when the price action and the gaussians are poorly expressed in 5 minute bars (lots of intrabar change). Sure, I could just look at the YM for that faster-fractal clarity, but sometimes I feel like that would be a misuse of the YM, which I am supposed to be using only at times of change as a leading indicator. So, to avoid overusing or misusing the YM, sometimes I drop down to 2 min ES at certain spots. Attached is an example of a spot where I might do this. Note that every bar is extreme in volume, and that traverses and retraces often complete within a single bar.