Using the mat to reinforce an aluminum hinge bracket might work, but I would be concerned about the structure under the hood & trunk lid being strong enough to handle lifting it from just the rear (or just the front). The structure was designed to lift from both sides at the same time.
The next thing I'm wondering is if you have given thought as to how your going to latch them down? Instead of being lifted straight up, the hinged panel will now be swinging up and down at a curve. If you plan on still pinning the opening end, you may have to adjust the length and angle of the pins.Gene