Door knocking

Being polite and diplomatic will "open doors". My long passed on grandfather told me when I was a young boy that "if you don't ask you won't get!" These words of wisdom have held me in good stead for many years. Any approach should have a historic knowledge of the area and an expression of the benefits. I never go out without a few calling cards with my details and a card offering a "free service" in connection with lost items. Of course not everyone will grant permission, but whatever the outcome always be courteous! Once you have got one permission it becomes easier to gain others, especially with the power of the "word of mouth!" Good luck and good hunting!