... the content unlike having a pencil and paper to stay engaged ... questions were clean of any pencil marks but for some of ... was aggressive in using his pencil to identify key points in ...
I'm not successful much at those, but when I am it is because I have circled the difficult parts. I think it helps me remember where the parts are in relation to my pencil marks, so I can find or remember parts of the passage when going back.
I would say that depends on the proctor... Ours was insanely fast... Best tip I can suggest is when they say pencils down, pencil down and right then move your watch.
LSAC specifies #2 or HB pencils. While they shouldn't care other than for the bubbles, and perhaps for the writing sample, they strike me as people who try to find picayune things to care about.