I work in a hobby shop and have been for the past 2+ years. Up to now the FAA has considered tethered aircraft (read Control Line) not to require government oversight. We were lumped in with kites, no joke, and as such were not deemed a hazard. The Q/A seemed to imply they have changed their mind, why God only knows. It does beg the question for kites weighing over .55 pounds do they require the pilot (LOL) to be registered?
Since January 1st the regulations have been changing faster than we in the hobby business can keep up with. Anyway I have registered myself, yes you register yourself not your planes, and all my planes including my C/L planes have my FAA number on them. The sticker also contains my name and AMA number. Rather than make two sets of sticker I made one and use it on everything. This is really getting crazier by the day.
Andy