Looking at the shackles you are using, are they rated? Here in Oz, shackles that look like that are not rated for shock loads and can become missiles! Please double check that they are proper, rated shackles which have markings as per the attached image.I didn't do anything exciting. Just tidied my boot. I once built an aluminium box for the Defender. I attached this removable box to the airline rail. That's where I put my recovery equipment. Including the good UNION shovel from the USA. I've only used it a couple of times so far. Before that, I had a German military folding spade that bent when I was digging.
And when I put something in the boot, I'm always reminded of my Defender. This rubber mat is robust and has never stunk like the cheap material you can buy today.