Oh man I destroyed 3 of those dance mats. we rewired them to use for stepmania (pc hatswitch had simultaneous opposite direction problems back in the day) and taped them to the ground and gave them a real beat down. The layers actually wore down from trying the pledge furniture polish and socks footslide technique which I quicly hated as damaging. I have now ancient solid decks that could handle it but I still hold a grudge against sliding.