I think I'm for sure one of the most law-obiding spotters, I never really trespass or so (and if I do I feel terribly afraid and guilty)
I would not easily take a peak at a "forbidden"site, but on the other hand, if a site is really "secretive" than they should put a wall, fence, water, trees, guards with dogs or whatever around it...
Judging by the photographs and Google Earth to me this doesn't seem like a very well hidden camouflaged site.. If they don''t want people to see the helo's , just build a wall... The fact that Perrie could freely take these pics and even dares to show them here already proves to me that he feels comfortable, if he felt these were really sneaky (or even illegal) pics he would post them anonnymous or not at all.....