What are you normally running for deep sand on your rig? Tire pressure-wise, I mean.
The Michelin XZL tyres are quite strong in the side walls and dont want to belly until they are under 18 PSI from memory on my lightweight rig
But on split rims with a tube they start to rotate on the rims around 12 psi even with the Canter's moderate HP
I think I used to run around 15 psi in dry dunes but realistically it would go anywhere on the softest flat sand with 18psi
Now for the front bumper, that bogging issue was way worse than it looks, that is not sand under the truck but a coastal clay/pan that had about a 350mm dry crust and soup underneath that
After trying to sleep the night on that angle....and abandoning an attempt to walk 15 miles to the main track pre dawn
I found an abandoned settlement about 2 miles away that had that timber and a crappy wheel barrow that was extremely hard to push loaded across the flat
It was hot so I erected a sun shade and then removed the front bumper to make the jacking process easier, there was a lot of jacking.
Whilst I worked, the wife and kiddies filled the wheelbarrow with sand about 40 yards away and then I would pack with sand as the vehicle was raised.
My biggest worry was the other side going down as well that is why I went way past the point of recovery to make the reversing out as gentle as possible...low range idle was my aim
So it took most of a day to recover..there was no-one else around though I had rescued another vehicle the day before, they were long gone
Need to post a pic of the natural 'winch drum' you get when running singles on the canter