> @Harvette said ... fillable pdf of the answer sheet to discreetly do untimed practice ... , maybe you should use Excel sheet or LSAT Test Analytics on ...
I would BR with a clean copy. If you don't want to waste paper like me, you could look at an electronic copy of the practice test and write down all your answers on a separate sheet of paper.
I think he just does that in the videos because he is doing it on the screen. In real life, never erase, just cross out mistakes. Unless you absolutely are forced to. Or if you make a mistake on the answer sheet.