I have been working on my fuel tank coffin and bulkheads the last few days. I installed the slats and temporarily laid in the 1/8" neoprene (60 Durometer) strips.
I need to know if these are strong so here I am standing on two of the six. I go about 220 so I pretty comfortable with the installation. Nevertheless, I added more cloth in the corners and another layer across each slat for maximum strength.
In this photo I've laid in two PVC Sch 80 1/2" pipes to drain the fuel coffin in the event of any water intrusion. These will pass under the area for my rear fishbox that will be foamed in.
Added the first and second layers of matt to the rear access. This will be glassed in shortly. You'll notice where I've added the holes that the cockpit drains will be mounted in.
You can also see the door for the middle opening in this pic.