I believe it helps a great deal if you are anticipating certain moves or know the "levels" in advance...At least then you have a concept of what "should" happen if/when it hits a certain price, breaks a specific support level, etc...
But, from my experience, when the market has sudden "pockets" or "spikes" lower the emotional instinct is to "hop on" and to get in on that action, but most of the time those are very regrettable trades...In general, I feel, personally, my worst trading days are when I am using the shorter time frames to control me as opposed to vice versa...It is much easier on the psyche and the account, in my opinion, if you can at least anticipate a certain type of action occuring first and then see that scenario unfolding...
I also think that if you do get in situations where you feel "beyond the brink" or that you are trading an "outlier" move that trade management becomes the deciding factor in how you come out of it...In my opinion, that always means you need multiple contracts because trading a 1 lot almost invariably either leaves money on the table or gives back big open equity...I just don't think you can manage bigger moves with single contracts...Need multiples...
It always helps to be positioned BEFORE the event happens...That way when all the reaction comes into the market you are already in the catbirds seat...Index futures, from my experience, definitely reward positioning ahead of the bigger events...Tricky as all hell, but it can be done...and even better it does not have to be done everyday, just once in awhile in these markets and you can get some seriously good runs...Avoiding all the chop is the real discipline...Something it seems all of us are continually working on...