If you tip extra the proper thing to do is give it to the individual in an envelope with your name and cabin number on it. If you have not removed your name from the auto tipping the person gets to keep it. If you have removed yourself from the auto tipping it goes into the pool. In my opinion those that remove their names probably stiff half the people that they should have tipped and unfortunately those people rely on tips for their livelihood. You cheap skates should be ashamed of yourselves.