If the first arrow went through the boar than it did all the damage it was gonna do and the arrow shaft was not gonna plug the hole. The thick skin of the boar is what makes the hole plug up. If he rolled in the mud than i am sure that did not help. The problem is the best shot you can take with a bow is a quartering away shot right into the pump station. Don't expect a pass through no matter what broadhead you are using because you are most likely to hit the opposite shoulder. The main issue is that 80% of the boars lungs and all the heart is located behind the shoulder blade. If you aim just behind the shoulder blade you have a spot about the size of a baseball to hit the top/back of the lungs. If the leg is back in its step then it is probably covering almost all the lungs. Unlike a deer, a hogs spine drops significantly from mid section of its body to the base of its neck and the animal only has a heart/lung cavity slightly larger than a human hand. I would personally keep using the rage but just pick a different shot angle. Good luck and hope you get one. Success with a bow feels so much better.