Fast Skinning Animals & Easy Money
If you're looking for easy money and want to try a different method to the save-poker-all in-save/load method in Blackwater you might want to try killing bears up in Tall Trees.
The point now is after taking them out, skinning them all can be quite annoying due to the long repetitive video sequences. You can "cheat" your way around this by whistling for your horse and then parking it on top of the animal. Then you just triple press the Y button (Get off the horse, Skin animal, Ride Horse).
With this method, you can collect those items in no time. Just go with your horse from one animal to the next one.
Another tip might be to hunt Buffalos as their items can be sold for quite a few dollars too. (Make sure you haven't yet got the secret achievement as they won't respawn after.)
And if you have already unlocked the Hunter outfit, wear it! It'll give you double the amount of meat/claws/antlers etc. If you unlocked it even before lv 10 of the Hunter challenge, you can even get the two of each of the legendary animals' items.
And remember to sell your stuff (e.g. bear items in Escalera) at the farthest store from where you hunted it.