Trust me, those long spears are heavy! Nothing to do with the aluminum things I used to throw at school.
I did once fly a wounded warrior with such a spear across the torso. Of course that 2 m spear wouldn’t fit in a small plane like the one on this picture, nor in the Land Rover that brought the man to the bush hospital. No problem since the wounded man’s friends had taken care of that: 2 held one arm each while a third one put his foot on the belly and pulled the spear out!! Obviously these guys have zero knowledge in open wound management! The guy survived by the way, proud with 2 neat scars to show off.
This one managed to throw a spear and a club within a second. By luck I caught both weapons on this shot. That brown speck on the horizon is the club!