My solution would be one of those cheap wireless backup cameras, the ones that come with their own little monitor, and mount the camera right near the gas cap.
https://www.amazon.com/Installation-...2P5R2N0CSGXTZG
$26 will end it all forever and $40 let's you go wireless. Hook it up correctly and the reverse guide-lines will line up with the pump.
There are hundreds of choices of camera setups.
I was on this path but suddenly my aim got better so the camera and monitor is in the bottom of the 'mod box', languishing.