Backpack For the Big Guy

So, a couple years ago, I bought a Blackhawk Hunting Pack and it is probably one of the bigger purchase mistakes I've made. I look like I'm wearing a backpack made for a kindergartener.

Any suggestions for somebody that is 6'5" has 25"+ shoulder width and a 56" chest? I might just go with a fanny pack that has a good shoulder harness.

 

use a pack frame and strap two backpacks on?

 

get a decoy bag for duck hunting and wear that.

 

My decoy bags are filled with decoys already