A good way to make a wild base is to travel as far away from spawn as you can, cause the farther out you are the less likely it is to be discovered. The best way to avoid it being found is to make your base underground with a hidden entrance, setting a /home there to get back. Remember to lock any chests but in the wild griefing is enabled so don't place anything there you would mind loosing since anyone can take it if they find you place. Good luck and enjoy the wild!