I am the new owner of a 2010 Element Ex. I will be driving it with one seat almost always up. (My big Goldendoodle sits in the passenger side rear seat.) After a week of driving my new Element, I realize that I have to do something to make the rear area less slick. Things are rolling around on the rubber flooring like I am on the high seas. Carpeting, cargo net, yoga matts, ???? What are some ideas on making the back cargo area and one side without seat more friendly to groceries and general stuff?