I almost always hook up to my 5.0TA to our Anderson Ultimate by myself. Using the rear view mirror I line up the pin with the center of the truck and go straight back. I do jump out and close the tailgate when getting close, see how much distance I need, then reverse that much. The odd time I have to go forward or back another inch or so but that is all. Sometimes I too will have my wife tell me when I am close if she is hanging around. Easy peasy, takes less than a minute.
I much prefer doing it alone actually. My wife does help well with everything required to get ready to drive off though. For starters she packs up and puts away everything needed inside.I could do that too, but would probably put things in the wrong place.