I made this Coarse Leather farming guide to help out players who want to farm the leathers instead of buying them from the Auction House. I traveled around Zuldazar and Kul Tiras to search for places with a high density of mobs which I can kill and drop Coarse Leather. Below you will find a list of places I think are the best for farming Coarse Leather.
There are always at least 4-5 Scavenging Boar up at Hocking's Plot.
Kill Da'kani Pugilists and other gorillas around the marked area.