As mentioned above, enterprising sailors (cough, and officers) have worked every concievable angle over the years. This is pretty much the standard article, change the date, add new names and ships, and reprint. As HH-60H said, haven't met many sailors have you? lol I remember being in Norfolk in the early 90s, quite a few had marriages of convenience. And I am more than certain that this is still going on. The other side to this though, is Seaman Jones coming back from deployment to find the house trashed, his "wife" ran up bills and trashed his credit, yada yada yada....
Other variations on a theme, PSD used to do checks on what single sailors where living at the same address and not reporting it.....
I know the military has been discussing doing away with the differences between married and non-married housing allowance differences. I doubt with the budget as tight as it is currently, that it will come to fruition anytime soon.