Go to Tractor Supply, get a small roll of hog/cow mat. It comes in different thicknesses. It's a dense rubber that's tough as hell. That would help absorb noise pretty well, lay the carpet over it.
Good idea. I've got a few in the garage to stand on at the workbench. I've pulled the 95's maxipad to prevent any other damage. The pads that I have from TSC are pretty thick, maybe they come in different thicknesses. I was just planning on several layers of DIY bedliner, assuming my buddy wouldn't spray it for me.edliner