I put my tools in there for work the first time and it pulled the old disappearing act down a hole. Thinking of cutting a piece of 1/2 or 3/4" plywood to the shape of the entire area, anyone have a better idea?
I've thought about tracing mine out and cutting it from a slice of particle board. Worlds sturdier but still relatively light. I should probably do it soon because mine seems to decay a little bit more every day.
My '95 VX had a fairly rigid and durable coroplast-like spare tire cover (I've never seen another VX w/ one like this). It was very lightweight and was in great condition when I sold the car 1.5 years ago.
My current '95 DX hatchback's tire cover is the regular particle board type material. When I carry something heavy, I use the cover that I made out of 1/2" plywood (traced from the original). I think this is overkill, though. 1/4" plywood is probably rigid enough and less weight.
My coroplast cover had deformed into a contact lens shape. Weights & heat did nothing to flatten it.
When I put in my amp & subwoofer I fit a piece of 1/4" plywood under the carpet in the back of my CRX. It stands up to full cases of oil, a 20lb tool bag, and all the groceries I can get in it. It's lightweight, sturdy, hasn't warped yet, and is very cheap. I've fixed all the leaks so it doesn't much need to be waterproof. Still, a quick going over with a can of varnish would fix that if it were/became a problem.
I made it a bit large and have to wrassle with it to get underneath, like yesterday when I left my lights on and had to get out the jumper cables...