Flyfishing around Winterthur

Hi

Soon to arrive to Winterthur from London (UK). Are there any fly fishermen on the forum who could tell me the basics for fishing in the region? I have already learnt about the SANA certificate and am more after finding out how to find interesting spots. I am after trout and grayling, ideally wild! I don’t mind (even prefer) a good hike to get there as I like wild/remote waters a lot!

Thanks!

Pat