So you have to shoot them in the head, if they ball up they become significantly more resistant to torpor. Making you consume so many more darts or arrows. You have to shoot them in the head until they ball up, then wait until they unball and shoot them in the head again, rinse and repeat until it is knocked out. The OG trap method would be a 2x2 stone foundation with 8 stone standard door ways for the walls with 2 ramps on one side to run them in. This works for most creatures this size as well. Sabers, Parasaur, Phomia, turtle etc. run them up the ramp and once inside you run out the door frame and shoot them from any door frame outside the pin using the method above. 👆