do people have different strategies for avoiding the secondary screening on very light flights?

i had an RJ flight a couple of weeks ago with five people on board. they did not call boarding by groups, nor did they call for preboarding, so the first announcement was for all passengers. no one moved. being the impatient individual that i am, i ended up boarding first. neither i nor #2 was screened, and i don't know what happened after that.