I understand the need for tongue weight, so here's my question. My brother made a utility trailer out of a boat trailer we had when I was growing up. It is balanced when loaded with 2/3 cord of wood. push the tongue down and it will stay there. push the rear down and it will stay there. He has hauled 3 1/2 or so cord of wood every year with it, 20 mile trip and it has never done anything out of the normal. When I saw it the first time I told him he did it wrong, but he likes it the way it is. How come it works?