I pretty much did the same thing Average did, I moved congos several times and then I was undetectable to them. Eventually I moved around 100 miles away and no one noticed.
In the beginning, in order to not really get hauled in, I moved halls but kept "forgetting" to switch my publisher card. So when I got the call to ask about my time (I believe because the CO was in town), I lied and said "4 hours", enough to get them off my back, but not so much that they would question.
In order to keep my mom for getting too upset, I would say that I was traveling or busy at work and that was why I was not regular at mtgs or in service. For some reason she found that acceptable. Now we just don't discuss it at all.