I know what you mean, it's fun playing, and getting stuck occasionally, but when the ruts are that deep, all you end up being is a "trailer" to someone else. We used to go to a site in Battle, which was fantastic, until we went one time, and the ruts were so deep only the heavily modified could get through most places, and after just one trip round, most people started leaving, as it stopped being fun, even for the ones who liked doing recovery as all they were doing was towing one car out after another and weren't getting to drive round as the course was continually blocked.
That was some bump into the tree stump, lucky it did not take the radiator.