I do check pre-open to see if the stocks that I guessed are active there. Also place pre-open top gainers and losers on market watch. I will immediately look into possible reasons why they are there. But trading at 9: 15 does not work. I tend to watch how they open with gap up etc and observe if they collapse or keep moving up etc. I may or may not trade but keep them on watch list for that day. So many other factors like global market trends and if the day is dull or trending etc impact the day trading work.
I also buy/sell BNF options but not as day trades. This trade I look at independently as different from my day trading business.
Edit: Sorry I got the question wrong earlier. To reply to the question, I do not place orders in pre-trade. I just look at them for trends.