As with any communications that are "illegal" It's all about what you say, how frequent you transmit, and how frequently you transmit from the same location. It also helps to have a low profile/portable antenna. Giant antenna farms tend to bring attention.
If you're smart about it you can and will get away with it.
As long as you follow those guidelines, not even God can track you down.
People get away with it everyday. So don't play too much into the "oh my, thats illegal, waaah! crap. A few examples of people being fined is such a minuscule part to the thousands of people that do these things on a regular basis.