That was going to be my suggestion.
Or you could go “mission impossible” on it! Crawl under the back end (jack it up if necessary), and using your drill (or sonic screwdriver) you back out all of the screws for the gas tank, then push the tank up into the trunk. Then you can sit on the ground and work on the trunk latch at roughly eye-level while holding your mini-maglite in your mouth. Remove the trunk latch, then carefully back out underneath the car while pulling the gas tank back into place so no one knows you were even there!