Clecoed on the aft top skin and then moved the tailcone off the saw horses and onto the floor in preparation for riveting. I then filled the interior with pillows and blankets so I could safely, and somewhat comfortably, lay down inside to buck. It worked, but I wouldn't say I enjoyed it. Anyway, we got it done in short order. I had previously installed the seat belt attach brackets while the top skin was off thinking I was being smart -- not! I had to take out a bolt on each side as they blocked access to longeron rivets. I replaced the bolts once riveting was complete. I finshed up by installing the AHRS and battery mounts.