I had this awning, don’t want to put lights on it as water builds up inside when heavy rains..but still pretty good awning..for the price, just too good..we love ours..
It opens up probably 85-90% of the way with the tail gate resting against one part of the arm. I put a rag inbetween the arm and side of the boot where it rested. Didn't effect using the back for me. However, I'm 6ft and did bump my head a couple of times on the corner.
