OK, let me tell you my little story.
Back in 2000, I saw Tim Indy do his infamous slow roll. One roll, straight as a arrow, twice the length of the run way with no pitching up or down! It is now 2004 and I can do it with some pitching, but fairly straight in both directions, rolling left or right.
Now, this summer I saw him do a rolling circle to the outside for half the circle and inside for the other half. He did this perfectly timed, without any change in pitch or roll rate. I plan to be able to do this by 2008