A good rule of thumb would be, if he can hitch up easily drag, if not, then stake. Keep in mind the rule of setting to hold your largest potential catch, so that whenever possible large non targets can simply power out instead of needing release.
On drags, keep your chains very long for wolf and again to keep the drag on the ground for both the wolf and the rare day of the non target so that the drag itself stays down on the ground and is not doing circles in the air. Also, do not use grapples, they are often weak and require solid bushes/trees to stop game whereas the modern drag or "plow" is keeping your catch slowed down the moment the plow starts moving and any root system, even sod can plant the thing.
This one is a coyote plow. I would redo the chain connection point on it if I was going to use it around dangerous game. Welding every swivel is wise.