Before you go ahead and read this, you must know, this is all personal advice, and I am assuming several things:
1. You have a PASSION to go medical school. I knew 100% when I was 15.
2. You have read My Story.
3. You have not taken the MCAT already.
4. You are apt3 and willing to work hard.
5. You are naïve to the whole MCAT thing.
My MCAT strategy
SO...all the info below is how I approached every test. I never wanted to miss MORE THAN 10 questions in a section, let alone, have more than 10 marked for review (mfr).MCAT--> START!> Survey -> Choice to VOID scores (don't do this unless you know you BOMBED it) -> and 5 hours later - SUBMISSION!
During breaks you can eat food from your locker, relax, use the restroom, or continue on to the next section.
During the 10 minute tutorial on test day and 10 minutes before taking practice exams, I would write down all the physics equations as quickly as possible on my scrap paper. In this manner, I had my mind geared up for the PS section.