Here ya go, from later in the manual. We used to joke about itin school but never saw or heard of anyone doing it or trying it. In Germany they used them quite a bit to finish off boars that had run into the thick brambles during drives. I cant remember what they called the spears but it was a funny word...Im sure Ill think of it.
SPEAR: DEER and FERAL SWINE may be taken by hand thrown spear during the open Bow and Arrow season on these species. The hand thrown spear shall have a sharpened blade a minimum of two inches in width. The spear shall only be hand thrown.
I can just imagine sitting in a treestand with a couple spears