For our location league, all games have rubber feet under them.
Sensitive, but fair tilt settings.
You can get away with a good side to side save usually.
But get too aggressive and you will pay for it.
It is all part of pinball play.
Our rule is legs out of rubber feet is a round DQ.
We always check the legs on location to make sure they don't loosen up.
Never have any damage on a game from slide saves.
Loose legs will dig in though to the cabinet.