I guess the use of specially trained blood trail dogs for deer recovery is one of the biggest changes in deer hunting I can think of. Back in the 70's, 80's and 90's we would always have a dog or two we would throw on a blood trail, but usually the dog was used too soon and off leash and the deer would be 3 miles down the road when the dog was caught off of it. If there wasn't good blood it was assumed the deer was not hit, a gut shot usually was lost.
