looking for ideas (recovering camper from mud)

So my camper winters in my buddys field outside of town. His mine and a few others get rowed up on cedar 2x10s and all is well. usually we go get it in may once the wields have dried a bit. This year we are looking at starting earlier (easter weekend)and the field is seldom dry by then. I no longer have my jeep (beast in the mud 4x4 with locking differentials) The tractor is 2 wheel drive and my truck is 4x4 but open diffs. Anyone have any outside the box ideas to get the camper out? For what its worth its about 200 yards to solid ground. over vegetation but very soft leading to a dirt (mud) strip at the culvert to the road.