Some of the pictures were pretty tricky, I think identifying one that you had glassed in the field would be easier. The shoulder hump is pretty tell tale and some of the pictures did not have a shoulder shot.
This is all theortical for me though never hunted in a region that has both species.
It's all theoretical for me too - I've never positively seen a grizzly. I might have seen one once when I lived in Banff, but I'm not sure. There was some decent Black Bear hunting around home, but I was never successful, and I refused to "get in line" at the dump for a shot at a garbage bear.
Hinge-cutting serves several purposes in regard to improving both whitetail habitat and your hunting experience. There are two main types of hinge cuts including a cut for screening and funnels and a cut for bedding. Hinge cuts for screening and funnels should be done somewhere between the knee and waist to block a deer's vision as well as block a travel path. Hinge cuts for bedding should be done around chest high so that there is room for a deer to bed underneath.