Of all the stupid people I have met on this earth, some spotters rank high on the list. I've been a spotter, lifelong, but would never behave in such a manner. My wife and I went to Lasham last year and were peering though our binocs to see a German registered aircraft in one of the hangars. One of the gliding-types asked what we were looking for and when we explained he took us on a walk around inside the hangar. On another occasion at White Waltham, Ruth was trying to read off something in a hangar... and one of the pilots took her by the hand and showed her around. Politeness works wonders, as ericlday rightly suggests.