RTH
VanEck Retail ETF
stock NASDAQ ETF

Without considering any testing of ideas, when I am actively looking for trades it looks like this:
\- 9:15 AM - 9:30 AM EST: reviewing yesterday and overnight price action and key levels
\- 9:30 AM - 10:30 AM EST: looking for trades and actively trading
If I get a trade at 9:31 and get to my profit target, I am done for the day and walk away. If there is news at 10:00 and 10:30, I typically stop by 9:50/55. If the market is moving after RTH open, you can normally find a good trade before 10:30, but if it's not, I've found it best to walk away and come back tomorrow.

You’d need to place it as an overnight order. Outside RTH is 2.5 hours before market open and 4 hours after market close.

This is correct. Only stop limit orders are available outside of RTH.

Notice the pattern where futures gets really excited about the noise-news and then the RTH fades it
This goes for bull and bear noise-news

Almost RTH lows … woot woot

Tfw my genius moment of selling my GOOG today only netted me 300 bucks, bought back in Outside RTH after the dumb drop. Clawing back my options losses 

(Index futures for context) 
Most of my trades in the first hour are when I have a very clear picture of the overnight market structure, and the RTH price action is reacting strongly to key overnight levels. 
For example, a common first-hour trade for me will be buying a failed breakdown of the overnight low, if there was a very clear overnight range structure on a volume profile. 
If the structure of the overnight session is less clear, OR if RTH price action doesn’t seem to be respecting key levels from the overnight session, than I’m waiting for more clear structure to develop during the RTH session to take a trade.