I don't tell anyone not to do a tug/pull test, no matter the hitch brand. I did the first few times, with my B&W. After further studying the hitch mechanism, it became obvious, due to design, with proper hookup, handle closed, pin inserted, it could not release the pin from the closed jaws. I also use the double look test. When backed in, handle closed/pinned, I look closely at jaws around pin. After finished raising landing gear, removing chocks, walk around rig, one more close look at jaws/pin, just before climbing in the truck. IMO, ALWAYS...doing the second look, can save a drop, due to a possible early on distraction.
Jerry