I did this without Spirt of Wolf. When Morky is zipping around, target him. He will get really far ahead, but eventually he will double back and mash the "hail" button and he will stop dead in his tracks. Give him the bag of coin and he will give you the spear. There is a 'choke point' he runs through if you do not want to try to catch him by chance. When running south from Dock Area, after second Aqua Goblin camp, between the tree and the water. LOC: -878, 2888
*edit: added choke point location
Edited, Jan 7th 2019 9:16am by mlorente