Take your phone out, throw on some Bob Seger, and take your time enjoying breaking down your kill. In my opinion, I try as hard as possible to not rush. Rushing, especially when youre tired, can result in lost meat from poor cuts or even worse, a slipped knife to the opposing hand or leg etc. The worst injuries I have heard of in the backcountry come from a slipped knife while breaking down an animal. Depending on the situation/circumstances, I have broken down a bull solo at the fastest in probably 2 hours but that was jamming because of heat. In all reality it usually takes me 3+ hours with hide etc.