For as many ticks in a trading day there are different ways to trade.
I trade two timeframes(3M & 1M) and 4 signals first 30 minutes in ES, then drop oneM chart and only trade one signal for next 4.25 hours, then resume with 4 signals and three M chart last 2 hours. Lunch time, 4.25 hours, offers the most chop and unless I wait for deep retracements, pointless for me to trade at all. Market internals for me except for daily charts have been pointless for day trading. If I can't find at least a 85% profit ability(wins/BE's) in it, I look at it as unworthy for me. The main goal I seek is keeping losing trades under 5% based on weekly stats, of course that is a goal not always reached, but more times than not. And only acheived by strict money management rules. Since I keep my losing percentages down, I can average down on each trade, losses are staggering, but weekly gains are highly consistent, but I never ever recommend anyone to do this as most don't have the money management rules strict enough to concentrate on not losing.
Most won't trade last 45 minutes, but often times there are consistent 1-3 points in there to dig out. My Profitable/breakeven trades average 6.85 minutes on last 3000 trades. I set an alarm after 6.5 minutes to make me aware where price is in relationship to target.
Think most important indicator is me being able to identify between price patterns and indicators.