One thing to keep in mind with Bear compared to Deer, Elk and the other animals commonly hunted with bow is that the total broadside shot is better than the quartering away shoot. Also the the hair and fat reduces the amount of blood that reaches the ground. If you don't get a good hit it makes it a bit harder to follow a blood trail.
The strange thing is that Bear don't seem to go as far os the other big game hit with an equally well placed shot. Never had one go more than 25 yards in all the unts I had or in which I helped.
Take a good look at the anatomical drawing and keep in mind that the boiler room is 90 % below the center horizontal line of the Bear. You can get into real trouble if you get a high hit. Bears don't seem to go down and do well compared to deer and such with high or further back poorly placed shots. They seem to live longer with such hits hits. They may die but you may not find them and the blood trail disappears very fast.

Nub, I have been doing just that for years. I once ran into a fellow hunter at the Milwaukee Co. Zoo doing the same thing before a trip to Africa.