Turf a bag of grit under the driving wheels, or wood if you can find any.
You have seen the size of his truck Lee, I would be playing the disabled cardOops, as Trev said plus as many people pushing as you can find.
I'm a bit worried, I understand the stap and the shackles but what do use the shovel for..We've got Louise's van here, and I've got a shovel, strap and shackles...
And It'll freeze overnight, maybe help. But, it is quite nice here