When I bought my Escape it didn't come with a cargo space cover but I am now thinking of getting one. I'm used to having a system in a car with a sealed trunk. Having my sub in the trunk sort of filtered out most of the port noise etc. I'm wondering if I pick up a cargo space cover on ebay if this may help with that as well as hide the sub? Or will the thing just me shaking and rattling away back there. Anyone use one of those covers with a system?