A cousin of mine works for the county sheriff department, he used to call my family or Grandfather when he came across a deer kill where the deer wasn't hit that hard. Just have your buddy look for the accidents where the deer is maybe hit in the head, where the deer runs into the side of the vehicle. Then there won't be that much damage to the animal, any broadside hit the animal is pretty much shot, it's not worth the time of separating the good and bad meat for the little meat you'll be able to use.

As for taging, he should have a tag for you when you get to the scene. If a sherrif calls you to pick up a road kill and helps you load it then a DNR officer tryes to do anything, I think you'll have yourself a pretty good defense on anything he may try to pull in court.

Paul