We have a 14' (or so) Old Town Discovery. I have hunted and fished out of it for 10 years or so and never had any trouble. I have been in and out of canoes since I was a wee one.
I think there are a few essentials when looking for a "hunting" canoe. These are of course COMPLETLY different than what you would want for a white water craft.
I like a flat bottom (for a canoe, anyway). You give up some speed, but hey, were not running races. A flat bottom gives more initial stability. A little flare to the sides can provide secondary stability. For a flat water boat I also like a keel and little or no rocker (front to back curve). This helps keep the boat tracking straight. A canoe with a modest keel can still be used on slow flowing rivers and streams. If you are gonna be dragging over a lot of rocks, a keel can be a liability though.
Here is a decent link for looking at hull configurations and choosing a canoe:
Choosing a canoe I grew up in alum. canoes. They are tough and fairly easy to repair, but they can be NOISY! A plastic boat (I use plastic to encompass anything not wood or metal) is quieter, won't freeze to your skin in cold weather and will not blister you in hot weather. A little more difficult to repair, but harder to damage. Wood boats are very attractive and can be as care free as plastic or alum. boats but have to be stored properly so they will last and do need some additional maint. They can be tough to repair after a bad pile-up.
Probably more than you wanted.
OkKeith