It's been a while, so I looked back in the thread, and Jim and Cal have a point. Since you removed the rear cross-member, you definitely will want a hoop to replace the structural support to the frame (to prevent twist), as well as to support the rear portion of the seat if you ride 2-up. It's a bummer that the frame is powdercoated, but you can always feather/spray in a gloss black enamel paint where you weld in your hoop.