I wrote an article about this for RC Universe a while back. I dont have the link to it, but I know that it is near the University section of the site. It is a two page article that explains the why and how to of Rolling Circles. The answer your question is yes, I do use rudder, and elevator to make things happen, but the most important is power. Use power to control altitude after you have found the rhythm of the Harrier Roller. Lots of Practice and Good Luck, Mark