I found the standard rubber mats too flimsy and prone to rucking up, so I bought a couple of A2 sized sheets of 6mm rubber matting from Amazon and cut my own.
Nice and heavy so they stay in place without needing to be secured down which means they are easy to pull out for cleaning, and the additional thickness provides a bit more noise damping too.
Last edited by Hamwich; 07/05/15 07:31 AM.