Yes the slight roll is performed during the pull.
The key difference is you enter the manuver holding a bit of rudder, I enter the maneuver with no rudder because my plane is already tracking roughly parallel to the strip. The slight roll during the pull means I exit the pull wings level with the end of the box and the flightpath vertical even though the nose is still pointing out. The push over is the reverse, the rolling during the push means the wings are level over the top, the nose is still pointing out without rudder and I exit nose still out wings level with the end of the box on the downline.
Try using your stick plane to fly a spiral around a coffee tin. If you start out with the correct yaw angle it's clear that rudder isn't the control we need to be using to 'fly" the spiral around the tin. The plane fly's straight around the tin in a spiral with just needing aileron (and elevator of course), and you'll see how any rudder will muck up the line. In a crosswind the flightpath through the airmass should be a spiral to maintain your groundtrack. Edit: It might be easier with a little toy car, put it on the tin at an angle and drive it around in a straight line (or rotate the tin), which would form a spiral around the tin which is exactly what we want to fly for a loop in a crosswind. The car doesn't need to be "steering" to one side.
Yes it was blunt, but given the number of posts on the topic I don't feel I've just walked into a conversation, my apologies in any case. I just hope that when I exit a 1/2 Reverse Cuban turnaround (or whatever) in a crosswind and don't have to touch the rudder for the full length of the baseline because I've exited on the correct flightpath, that the bloke sitting in the chair behind me isn't docking me points because my nose was yawed in or out on the exit.
Last edited by bjr_93tz; 03-14-2014 at 01:33 AM.