So a cold rainy weekend means no camping trip and thus an "excuse" to get some work done on the back wall/subwoofer.
Keep in mind, I am not a bodyman and just going with techniques I have used in the past based on information pulled from the 'net.
Anyhow, with the back wall removed, I covered it with green painter's tape. Previous experience has shown that fiber glass resin will not stick to this:
Next, I tightly stretch polar fleece around it doing my best to ensure it follows all the contours:
And now I soak it down with fiber glass resin:
When the resin has dried, it is pulled away from the plastic and I have a form to work with that gives me the basic shape of the back wall (minus the subwoofer section):
So again, I completely gut the rear section of the Tundra including the temporarily installed radio components. Once the seats are out I replaced the bolts back in their holes both to not lose the bolts and protect the threaded holes as well:
This weekend's main job is to get the wall completely roughed in. That means working with fiber glass inside the truck. This stuff is the stickiest, nastiest material ever. If any of it comes into contact with the interior, it will be ruined and have to be replaced. Therefore, I am not taking any chances and sectioned off the rear of the truck with two layers of a heavy plastic drop sheet:
Hindsight always being 20/20 I should have also covered the ceiling. Although nothing happened, the possibility was there.