I had the chance to work with about 20 guys cutting treetops that had been left behind by a logging crew for a guy who is fighting cancer and not able to cut wood for his outdoor furnace. They use the outdoor furnace to heat their home and one of their greenhouses. It only took a few hours to cut and haul the wood shown below (he was supply was completely exhausted). Seeing how much it meant to him and his wife was worth the time and effort.