Hand ploughing is effective but really boring. I used to do handploughing when I was full nature, but now I will always do mining - trying to get better metal to make better armour,weapons and curios will also improve your village/characters combat capabilities in many more aspects than just grinding FEP.
Ofc if you are trying to grind as fast as possible by yourself, handploughing is probably best in some situations. I still dislike it though
