You may want to try communicating a bit more beforehand about what the markings mean... People don't read minds; and they certainly won't if they don't know the method.

And use fuller sentences when asking people if they know sup method. If you just write "Sup method?", they might assume the Sup means 'sup, and that you're either a person with a bad grasp of English, or someone asking what the method is, or that you know a player who you happen to call method.