Hey there. Posting this as a point of discussion, not as a confirmation of the rules.
I see a lot of people lifting their ball when they reach the green and i am fine with that. But when they put the ball back they have lines on it that they use to align their put.
b. Lifting Ball
A ball on the putting green may be lifted and, if desired, cleaned. A ball so lifted shall be replaced on the spot from which it was lifted.
So i do not see anything that determines how the ball should be returned to its original place, but doesn't it seem like improving your lie by using a line as an alignment aid? I use one for practice to see that the ball is rolling straight and my putting is not causing a side spin. But during the game?
Im just surprised that this is not something that has been addressed or clarified by the rules, especially after all this attention with the belly putter and unfair advantages.