And, if the pvc is not the stronger type (thickness) it will co laps, under the weight. Now, ifs you could come up with a shape conducive to not rolling, then you have something. There is someone on the market that makes a plastic sticker that is a 1 x 1 with grooves in the middle, to help cut down the amount of contact with the wood. There was someone who began to make a similar design and got a letter form some legal council and they had to stop making and selling them.