In highschool a friend of mine had a winch hooked up to a car battery mounted on an old wagon (the ones with the bubble tires, not hard rubber/plastic). He used to use it in the woods behind his house to drag out trees for his firepit...he'd pull the wagon as far as the winch line, draw in the line to pull the log, repeat. Worked quite well. Otherwise, a 4-wheeler with a winch can never go wrong.