Other hints
Just decided to drop in on my own post to see whats here. Since the discussion is starting to widen, I’d like to toss this out…
1. This last season I used a pair of those nice (expensive!) telescoping hiking poles. They look like ski poles, but they are just for hiking. They make a noticeable difference while packing out my deer, especially when climbing steep terrain. But if it’s really brushy… they tend to get caught up. If you can pick up a decent used pair on Ebay, I would recommend them.
2. It can’t hurt to talk to some local outfitters working the area ahead of time and see if they can be hired to pack an animal out. I approached one outfitter last year and got rebuffed, but its worth a call. Maybe better to work something out with a local rancher if you can find one. But... I know some states frown upon that as being a "hired, unlicensed outfitter" situation.
Anyway, I'm starting to think I might stick to my comfortable hip pack for hunting and then once I have something down, going back after it with the regular external frame pack and hiking poles.