Pulling through does bring with it the need to be sure someone isn’t pulling in from the other side; however, if you can pull through odds are you’re in a lesser populated part of the lot. I prefer to pull through cause I’m nervous about stopping in the flow of traffic and then backing into a spot–you actually can have people try to whip it in behind you as you paddle backwards AND there’s no reverse lights to warn them you’re backing up. (more on that in the next “60 Second Lesson: Parking”).
Bottom line: do what you feel comfortable with! There’s more than one way to skin a cat!