thanks in advance!what have you guys done to protect floor,besides the normal track mats and runners. has anyone used sheets of hdpe(expensive), treated plywood,or.........?? also,it has no tie downs yet,looking for ideas=d rings or?? I thought the hdpe would be nice,cause carbides wouldnt dig in and it would be nice and flat for sweeping out! thanks again,any pics of ideas would be greatly appreciated!!