i took the neck shot only because the bear was standing in tall enough grass and heading into the corn field and thats all i had,it was shoot then or not at all. i had crop damage tags in september and was wanting to thin the bear out fast. normally i will not take any neck shot except when its angling back into the body. i've seen lots of deer walk away after being shot thru the neck,like you say if you don't get the spine they may not go down.