When I am unhooking or hooking up, I do not want anyone around. I need to concentrate. I don't want to talk with anyone or answer any questions.
So far this has worked. The few times that I have been interrupted were the times that I almost made a mistake or forgot to do something.
Also, when I am finished hooking up, the last thing I do is a complete walk around of my 5er, looking at everything. And I take a look at my hitch from behind the tailgate to make sure everything looks good there too.
And I am NOT in a hurry.