We talk about how rocketry as a hobby has taken a hit over the years, but I would say the model airplane industry has taken a bigger hit. Go to a local hobby store and try to find a balsa wood plane kit. Most of the junk in hobby stores now is RTF. It is real hard to get kids into building a balsa wood plane. A shame about Cox, great engines and control line planes over the years. I still have my Pt.-19.