I've never seen one help anyone. I have seen them get in the way, and cause rollovers. I've seen them prevent a rig from going somewhere it would have no problem going without one. They tend to dig into rock faces that you would otherwise be able to drive right past, or up. I have also seen them dig into the ground and prevent a rig from driving out of a rollover that they otherwise would be able to. As far as spotters in competition ising them to attach ropes, not any more. In most competitions spotters are no longer allowed to pull on straps. Too dangerous, er sumth'n. People put them on because they think they look cool. Opinion's vary... I think a very small stinger can look nice when it's done right. A radiator hoop that follows the lines of the body is more functional and I think it looks better.