cut the mats in half.
My sundowner has mats that ran cross wise, totally stupid was royal pain, had to get them into the trailer then turn em 90 degrees. And as you know heavy and hard to get ahold of. My intent was to buy mats and put them length wise, so I could drag em straight out and straight in. But one day I got ticked off and took a skillsaw to em and cut em in half. So now I have a couple 4X4 squares I can drag out the back and put in. Way easier to deal with.
My original plan I never got around to was, Tractor supply had mats on a roll by the foot. They are thinner than normal horse mats. Wanna say 3/8ths inch thick. So they wont last as long, but who cares, they are half the price also, they are lighter easier to deal with. If they wear out in a few years throw em away buy some new ones.
The problem with the paint in bedliners stuff is with movement and vibrations it gets small cracks, corrosive horse waste soaks into the cracks and under the lining and cant be rinsed away. WHich in turn causes alot of corrosion problems. This spray in type liner was the source of alot of Sundowners corrosion problems.