Here's my tip:

As a mother of teenagers, I know how much they like to wear sweatshirt-type "hoodies."

We always find a line that is the WTMD, if possible. Take the hoodie off and put in your bin to go through the x-ray. If you don't have metal, and don't have "bulky" clothing, you are less likely to get chosen for the grope (pat-down) after walking thru the WTMD.

We recently flew with my teenagers, and altho they grumbled about taking off their hoodies, none of them were singled out for a pat-down.