The pre-market has different characteristics then the RTH. Degapping from the closing of the previous day's trading to the opening of the current day, insights are available. This is true provided sufficient liquidity exists in the trading instrument.
cornerstone, It is about being logical, you can't argue with what the chart is showing you. If price reacted at an area in premarket, there is nothing wrong with considering that area in your trading after market. You just observing and waiting. we gotta make it simple and remove some doubt
I like to remove my doubts with some more instruments, even in the price of losing a trade that looks very good, in the long run it keeps me safe from more losing trades.