if I absolutely HAVE to go 2 high on the cribbing this is what I do, else its just 4 bits of lumber running inline with the jack right ontop of the pad, which does infact spread the load even better on the pad, to put the pad ontop would need 7 wide on the cribbing instead of 4, and 36" long instead of the 24" stuff
any setup I do, pavement, dirt, mud, etc gets at minimum a pad on the bottom, then I add to that for height to level up, the front end usually just has 2/3 wide with the 4x4's and a single 6x6 block ontop, the tires dont take much load on this when properly setup
any setup I do, pavement, dirt, mud, etc gets at minimum a pad on the bottom, then I add to that for height to level up, the front end usually just has 2/3 wide with the 4x4's and a single 6x6 block ontop, the tires dont take much load on this when properly setup