Trunk interior wiring protection

#1
Does anyone have something installed inside their trunk that protects the interior wiring from things rolling around in the trunk? I was thinking maybe ripped/cut (whichever one means lengthwise) in half plastic piping velcroed into place to still be able to gain access to wires.

I was also thinking about installing marine grade carpet to the interior to hide/protect the wiring. Has anyone tried this?
 
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