Many years ago, I used to operate from a strip in Germany with no aids. A friend devised a home-made letdown based on a nearby VOR/DME. I seem to remember that he had worked out that an MDH of 500 feet AGL was safe. One day he came down through the murk and was delighted to see the strip nicely on the nose when he broke out at around 600 feet. His joy was short lived; seconds later two NATO F-104s rocketed underneath him on a reciprocal track! An immediate landing for an underpants change became his first priority.