Ok, this is Waaaaay off...maybe. Instead of floating a whole floor on Auralex U-Boats, can I use something else rubber? Like...well, hockey pucks seem too hard and would transfer vibrations I assume. (This isn't for a whole floor, just maybe a platform for amps or.....whatever. Point is, this is theoretical as of now). How would old TIRES work? Lay out some tires of the same size on the floor and a built up platform over it. Necessity is the mother of...cheap inventions? Or stupid ideas ?