Pretty ingenious idea for moving it around. The real question is where did you get all of the cardboard?
The black stuff is boxes from flooring I have been installing.. The rest are boxes of all the stuff we got for our twins coming.. (Car seats,cribs,pack and plays, swings, and strollers). It adds up really quick with those huge boxes.. When I shoot out a area I just take bolts undone and replace the bad cardboard..