The entry filter is kind of traffic light that is used during entry for long and short.
Green is a "Go"
Yellow it's risky
Red is "Stay out"
The filter help me to stay out of choppy zones and sideway market trend.
Look at the chart.
3:23 buy signal and 3:28 are ignored because the sidewinder is red.
3:33 buy signal has a yellow sidewinder which is risky. We could entered the position but expected a small profit.
3:41 sell signal is ignored due to red sidewinder while 3:48 signal is a bit risky.