You need a mini-reflection. Check out the Yosemite Sam thread, and download the plans and build one.

NO JOKE. If you watch the video, you'll see Bill Altman doing a rolling circle in the gym about a ft off the deck. Its a piece of cake with the mini reflection. Just point the nose up a little. Set your throttle to hold it there, and shove full aileron in it. Then sit back and relax as the thing does rolling circles all by itself. No elevator or rudder input needed. Makes rolling circles easy.

Come to think of it...it makes hovering a little easy too.