Originally Posted by DivaHerself
At this stage of the game, aim for the front of the window, because you'd be surprised how things come up that will eat just a couple of minutes, and things will relentlessly snowball from there.
Excellent advice. Also, you need to know how long it will take to get from your spot to the turn in area. At smaller comps this will be a minute or two, but at bigger comps this can be 5 minutes or more. We always walk it and time the walk, and we purposely walk slowly so we can pick it up for the real thing.