>>578803
1. Check if spear hunting is forbidden in your country or not. I know its illegal at least in Germany.
2. The german name for a boar hunting spear is "Saufeder", look them up. You will notice that all of these spears have wings or a horizontal bar, this is for stopping the boar from running up the spear if it charges at you.
3. The shaft of a Saufeder is usually around 200cm long, has a diameter of 3-4cm and was either made of ash(Fraxinus excelsior), Cornelian cherry(Cornus mas), hazel(Corylus avellana), olive(Olea europaea) or oak(Quercus) wood.
(there are other types of woods used for spears, but that are the most common after my knowledge)
4. Boar hunts with spears were usually done with the help of several hunting dogs that distracted the pig.
5. For fun look up the "Cologne Fechtbuch", it doesn't teach you hunting but how to use the boar spear for self defense.
6. There are some youtube videos showing how its done.
This is how you should do it: https://www.youtube.com/watch?v=J47U9-hjVcI
This is how you will get killed by a boar sooner or later, but its a good demonstration of what the wings do: https://www.youtube.com/watch?v=-zCwBjCQqpY