That rhino liner or even hurcliner would not work well. You will unavoidably scrape yourself more than its worth, plus once its on... its on! Not exactly a good material for an interior application.
A carpet would be a better approach, but beware that the backside of carpets are rough and can also "scratch" your pretty plastic.
I have not put anything down and enjoy the scratches from actually using the cargo area with either dogs/gear/or anything. Its easy to wipe down and clean but not infinately durable. Find the medium that works for you.
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KE7AEY
Those damn voices in my head... gotta get DIRT!