I have a Kelty pack that is metal frame with a removable hauler type shell, it does have a wierd 2/3 down shelf that prevents 1/4's of animals fitting all the way down like they need to be. I strapped a 110lb raft on the frame today and it wasn't very fun. What's your go to frame for strapping a large load to? I will be heading to AK and need to haul the raft as well as 100lb'ish bone in quarters off a moose or mooses!! haha Tell me what to buy for my pack mule hunting buddies!!!