Many years ago I purchased FL.co.uk from the administrators of an Icelandic bank that had went under, right at the last minute, a couple of days before it was due to drop simply by emailing them after digging around a bit. It was actually quite complicated due the company being in administration as Nominet needed loads of signed paperwork from ex directors, copies of invoices etc to first of all get it renewed. The poor sod I was dealing with actually went to great lengths to assist in getting everything we needed, rooting through the basement to find all the paperwork etc, emailing all the ex directors to get them to sign a permission slip etc.
It was quite stressful because I had paid them for the domain and then it eventually reached the day it was due to drop while the administrators and ex director were still scrambling around to get all the right paperwork. In the end Nominet actually put a lock on the domain dropping to allow more time for the paperwork to arrive which I'm not sure I've ever seen happen before.
So yeah I used the contacting method to my advantage before i was properly drop catching but I didn't bother repeating it because it was a lot of work in the end!