Oh Lawdy you want a challange try unsticking a swamped dozer .I stuck a D4 Cat so deep the water was running over my feet and the fan was throwing water on my face .
Railroad ties and log chain got it out and about a half a day of shovel work .I also tossed a track once on a little Oliver HG ,in danged swamp no less .Backed up on a thick oak plank and put it back on ,another half day shot .