It has A LOT to do with not telling anybody...the rest is just proper room setup and odor control. Security is the one reason I don't have a girlfriend right now because I can't trust anyone.
From what I've seen, about half of the bust reports on the security forum are 50+ plant grows with serious security breaches. The larger the operation, the greater the risk. And practically every bust on that forum resulted from some basic human error such as telling the wrong person about a grow, answering the door to an obvious police "knock & talk" trap, domestic dispute with a bong on the table, etc. It is useful to read through the bust threads and see where others went wrong.Plus a lot of those busts are morons trying to run commercial crops with no experience and loose lips. A lot of them probably don't even know about these boards. Plus how many of those busts are one plant that some guy has in his cupboard and the bust is because of a domestic dispute call? I bet you domestic dispute calls count for a huge portion of those busts.