Ladybug,
ek doesn't say not to go back to the passage, the say only to use it when absolutely necessary. Read for the main point, once you've figured out what the main point is attack the questions. Often, if you understand the main point you can answer all types of questions without referring back to the passage, even those questions with direct quotations from the passage. Going back to the article wastes time, and lots of it, so only use it when necessary. And don't forget about using question stems as a source of info, a lot of times the writers of the questions reveal the main point of the passage when asking other questions.
Three weeks ago, I scored an 8 on aamc III, since, I've made significant progress using their techniques, missed scoring a 12 on aamc IV by one question.
It may seem stupid, but I realized what the verbal was all about doing one of the aamc practice problems. I had a total revelation, where I was like "so that's what they are looking for". For me, it was just realizing that you need to really define (very specifically!!! I can't overstate this) the main point. It's very specific and once you figure it out, the questions are considerably easier. In my previous attempts at verbal i thought the main points where very broad and encompass the whole passage. But, its just not that way, the main point is very specific and the rest of the passage is just there to support it. I know this is simple and obvious, but I wasn't realizing it before, and was scoring 8-9's, now I haven't scored below 10 since my "revelation".
Make sure you practice, I do at least 2-3 passages every night, allowing about 19 min for 2 passages.
sorry if i sound like a promo for EK, i can't say for sure whether i would have had this breakthrough without them or not.