I have a dually with a tonneau cover in the rolled up position when I'm towing the 5er. I can't see my hitch when backing up to the kingpin. Like Hone Eagle, I just line the sides of the truck up with the front of the 5er and back into the kingpin. I do get out and make sure the kingpin is high enough. Back in slowly and voila you're hooked up when you hear the latching mechanism close or the truck comes to a stop. I usually don't hit the kingpin with a thud, nice and slow does the trick. You get used to seeing where the truck and trailer line up and it becomes second nature to just use the mirrors when backing into the kingpin.