I have seen your Piper Cub video, where your son made some decent landings. Nice to see a father and a son sharing their time that way. 
btw: the airfield used to be in Ringheim. Later it was relocated, and where it is now, it is officially called "Verkehrslandeplatz Aschaffenburg" - where "Verkehrslandeplatz" means that there are published and binding opening hours (in contrast to simple club airfields, which open in nice weather or on weekends).
Not nitpicking, just informative.

btw: the airfield used to be in Ringheim. Later it was relocated, and where it is now, it is officially called "Verkehrslandeplatz Aschaffenburg" - where "Verkehrslandeplatz" means that there are published and binding opening hours (in contrast to simple club airfields, which open in nice weather or on weekends).
Not nitpicking, just informative.