LOL, it really is not that complicated, whenever I replace the windshield, I am on my 5th in 5 years, I have them install one of the factory rear view mirror mounts almost as high as you can, and then put the rear view mirror as high as I can on that very high mount and it increases the rear visibility a lot!!!!! I will take some pics as soon as I can, but for now just imagine your rear view mirror mount as high as it can get on your windshield and then imagine how much looking down and out of the back glass would help as opposed to just looking straight out.