yeah, Picasso it sin`t about price, its about price relevant to time.
For example 83.71 was an excellent short entry point for what 8 plays lower by 10-40 points, but a nice safe 8 scalps of 10 points for sure, and those add up.
But that price is no longer good once the pit closes, basically after 1:00 as you say to be on the safe side, and whole new prices become open for possibilities once the majority of day traders close up shop for the day---you see this around 12:45.....traders leave the market, and 1:05 traders leave the market.....and after 1:15 new players with their own agendas make what seemed good prices to go short in the regular session null and void---one of the toughest things for me to learn----you almost have to break crude into different sessions---the pit, after pit to the close, the 5-7 open, the asian open, the euro open, and then pre-market before the us pit open, and it all starts over again.
And different price possibilities are at play depending upon which market your trading, and don`t try to equate the price levels that apply in one market time frame, to prices during a different market segment with different players. You have to adjust your price expectations as well.