Hi Guys,
Thanks for bringing up the topic of the Waldwerke round Regensburg, because it is one of my main interests.
I have been to Gauting several times. You can find "slight traces" of the Waldwerk, if you know where to look.
There are some stones of the basis of the wing assembly hall visible and some walls (about 30cm high) of a small building, presumably the guard house, are left.
I once met an old man there, who told me where they put out the tracks of the small railway line of the factory in the 1950's.
Regarding the Amberg acceptance flights - here is an interesting page:
http://www.flugplatz-amberg-schafhof.de/
Bye,
Matthias (the other one :-))