I've done a small amount of model rocketry. My interest in the hobby basically ended once the various old-timers I had access to convinced me that any sort of guidance beyond extremely basic horizon tracking would indeed amount to ITAR controlled missile tech.
My interest ended when I couldn't afford to build the model rocket kits I wanted to build (I was a kid with a very limited budget). When I got older and had money, the lack of any convenient launch sites probably discouraged me from getting back into it.
