This might be a myth but i have been told in the U.K cops fly over houses with infrared cameras looking for such operations. Might be worth adding reflective material to the roof. Just a thought man, just because your paranoid doesnt mean thier not out to get to you!!! My toaster tells me Im paranoid all the time!!! (fuck i need a smoke, 8 months in south korea and not a sniff of bud, can you tell?)