Stay away from mechanical broadheads when arrowing a hog. One of the short, 4-blade types (like Slick Trick) will give good penetration.

Mud and debris caked on the outside of a hog will afftect the blood trail. The shield is cartilage and it is an internal structure. I've seen one with 2 dog teeth imbedded in it.

Quartering away is best, but if you have a broadside shot where the pigs is 90deg to you, aim for the spot right above the "elbow" on the front leg. The arrow will enter just below the shield or just at the lower edge on a bigger boar. The edges of the shield are thinner than the center. Well fed hogs with a lot of fat on them may not leave a blood trail for 30-50yds. What blood you do find may come from their nose and mouth if you clip a lung.

If you spine a hog, put another one in him quick. They are built like tanks and can withstand incredible injuries.

When cleaning a hog...WEAR GLOVES.