Heh, I took it upon myself to do just that a few weeks ago. I kept on shooting touch and go's with my Avistar. I would touch, then open up on a 45deg climb, get some altitude, half-roll, then pull up elevator for a 5/8 loop to be lined up for the next one. After about 20-30 of these, I must have gotten bored or stopped paying attention because on the last one I didn't get enough altitude. My poor plane almost made it through the 5/8 loop - smack! ...unplanned ground incursion. Engine/firewall went one way with tank attached, wings left the plane, nosewheel somewhere else. LOL! I had her patched up that Sunday though! Being my first crash, it was kind-of a wake-up call.

Good practice, though. I like to do it while the wind is changing.