Are you looking for a portable hoist, such as one that mounts into a trailer hitch, or a permanent camp hoist? I have made a camp hoist from a inexpensive hand winch that I bought at "Harbor Freight." It came with cable on it. It is the type used on a boat trailer. All you need is a place to attach a pulley (I used a tree branch) and to mount the winch. I mounted the winch onto a board, then secured the board to the tree trunk, at a 45 degree angle. It works great. If there is no tree available, you could build a frame out of wood, that is designed like a swing-set.