Hi Roger,
I love bear hunting! I have taken two Canadian bear with a bow. First one was a six footer, the second one was just shy of seven feet and qualified for the P&Y.
The first bear was taken with a 53# Black Tail, a Surewood shaft and a 160 grain Stos two blade. The second one was taken with a 48# Tall Tines and woodie with the same head.
I should have had a third one last year but I screwed up. I was using a VP three blade, but missed my mark.
I think if you put your arrow where it’s supposed to go, about any good sharp head will work. I could not tell the difference between the two bear taken. Both bows shot the arrow completely through those bear. Neither bear went further than 40-50 yards. They died quickly. I heard the death moan from the larger bear.
I got a much better blood trail with the three blade for what that’s worth. And if I go again that is what I would use. I actually tried to bear hunt this fall in MN, but we could not get a bear to reliably come into the bait.
One bear came in and messed with the traIl camera, but didn't touch the bait. Good mass crop and other natural food sources this fall.
Good Luck Roger, wish I was going with you!