Hm would be my turf you say?
Hey Richard... There are quite some websites providing info about photography at INN
. In general it's easy down here, an excellent terrace and all spots around the perimeter to reach by foot.
Sites you might want to visit are:
it's an enthusiast's website
search for Innsbruck
The Spotterswiki site isn't complete yet, but still worth visiting.
If you have any questions, don't hesitate to ask.