If at all possible I would run a cable under it to the front axel,but apparently you cant .Try to hook the frame somwhere not the rear axel.Just my opinion Illinois Gleaner
Dig out with a backhoe around the front and rear tires. This does a good job of releasing the pressure when pulling with a winch. Seen to many rear axles pulled off trying to move mud. Go easy and slow. Getting excited only makes it worse.