I have found out over time that you will learn how your plane behaves in different conditions, I personally use this maneuver to reposition my self in the box either in or out also watch the plane if you have a head wind it will blow you back in the middle of the box, and that blows your next maneuver the 2 rolls. I tend to not pull all the way vertical. Because you have to remember that you are graded on the line not the attitude of the plane. If you watch Jason or Andrew fly the plane will be flying sideways but their line will be straight.