It happened to us
One night on the Intracoastal near St. Augustine, FL waiting for dawn to make our crossing to the Bahamas, we anchored in what appeared to us to be a wide spot in the Waterway but within about 100' of a large schooner type sailboat which did not acknowledge our presence, but which appeared harmless enough, though somewhat strange in its appearance. The large bowspirt extending from the bow caught our eye, but otherwise the boat was innoucous enough, and we dropped the 60# plow on about 100' of chain, had a few glasses of wine with dinner, and retired early.In the middle of the night some second sense that I seem to have told me to get up, and as I peered from the gangway, it became apparent that we were drifting down on that bowsprit, and all that that meant, especially in the middle of the dark. The current had shifted (we were not aware that the widespot was a creek or river of some sort), and that the current went in one direction when the tide came in, and in the other etc. etc. ... The force of the current pushed the two boats together with such force that I alone could not hold it off. The bowsprit tore the canvas on the bimini that we had just had installed, and I yelled to a fast asleep crew for help, which was not forthcoming.What did appear however, was an ominious looking gentleman who said what's going on, to which I replied that his bowsprit was tearing up my boat, and could he help me.His crew was "johnny on the spot" and helped me fend off so that no more damage occurred, while mine continued to sleep. His attitude was wonderful, said not to worry, that it had happened to him before, and that no harm was done. We both acknowledged that it was my fault, as he had correctly set a stern anchor as well, and we were the ones drifting. Our lesson learned was a good one. First of all do not judge a boat by its cover, and especially its crew, and second of all carefully inspect your anchorage for tidal currents, depths, approaching storms, wind shifts in the night etc. etc. ......Many lessons get learned on a sailboat we have found, and we continue to learn them, and expect that we will never learn them all.