Pintle hook for a straight pull. Often, the differential doesn't like pulling in reverse so forward is always the preferred direction.
Pulling something up out of the ground... tree stump, land anchor, treasure chest... ? Still the pintle hook with one small trick thrown in; get yourself something round and solid like a log, and slightly smaller in diameter than the distance from the pintle hook to the ground. Attach your chain or cable to the buried object and shove the log up against it so that the chain or cable runs up and over it then to the pintle hook. The idea is to let the log act as a pulley so that when you pull forward the log changes the horizontal pull to a vertical lift. The reasion for wanting something smaller in diameter is so that when you pull, the load tends to pull the rear of the truck down, and doesn't lift the rear end off the ground, losing traction.