The hunters put the pig's head on a stick because it is a type of gift to the "beast"
Chat with our AI personalities
The lord of the flies originally hung on a stick sharpened at both ends. One end in the earth and the other supporting the pig head. Roger intends to do this same thing to Ralph if they kill him, but replacing the pigs head with Ralphs. They dont kill Ralph :)
Well, they use the first sharpened stick to put the pig's head on. They don't actually do anything with the second stick, but they planned to kill Ralph and stick him on there, just like the Lord of the Flies. Luckily for him, the naval officer came and the suspenseful chase through the woods is ended.
At the beginning of chapter 12 Ralph is hiding in the jungle. He comes across the pigs head and takes the stick that is holding up the head to use as a weapon.
When Jack and his tribe kill the pig they stick the pigs head on a spear and put it in the clearing as an offering to "the beast". They do not know that the beast is actually a part of them and not a physical being.
The pigs head, which was offered to the beast, was mounted on a spear which had been sharpened at both ends. One point to hold the head and one point to stick into the ground. The implication is that Jack intends to behead Ralph and then mount his head on a stick as an offering to the beast.