Dad called me the other day, very randomly to talk about this very strategy, which he and his wife benefited handsomely from for lo these many years. The best part is he 1) didn't actually understand very well what he had done, but wanted to tell tell me all about this SS 'trick' that almost no one in the world knows about, and only the head of the SS office in his area had any idea you could do it; and 2) even though he didn't really know how they'd done it, he still argued with me when I explained that I knew all about it, but it wouldn't work for me and spouse. Then at the end of the conversation, I had to break the news to him that it was made illegal the previous day.
We both found this amusing.