Most will come in to your flagging and then go to your set and over your trap too.
I’m with Mousey Trapper, I’ve never seen them circle, just bee-line for my flagging and then investigate my set. Your trap guiding/placement has got to be on point, they don’t move much when investigating a set. They’re not like coyotes who will move foot placement and give you multiple chances at a catch. Guide heavy and hard.