I'm sorry (and surprised) you feel that way Jonathon, my point has always been based on the openness to all to take part in SOTA.
As for canning the thread - as it has gone off topic - as original Author of the thread, that is something l think all originators should have the ability to do, unfortunately only MT and reflector administrators can do that. I have had several threads that I created go way off topic and despite my best attempts and requests was unable to close the threads, so much so that often I will now not open a thread.
Trying to bring this back to the original subject - did you decide to investigate phasing two antennas further - perhaps one could be a beverage antenna. Another idea could be to mount a reflector element under one of your existing antennas to make it a better (more vertical) NVIS antenna (of course it depends where the interference is coming from as to whether this would help).
Of course a Skyloop antenna is a quieter (less interference impacted) antenna, but you need some space to install these full wavelength horizontal loop antennas.
P.S. If you find the source(s) of the noise, I'd report it to Ofcom, even if they do nothing about it, it will go into their statistics that it has been reported. If other (possibly commercial radio) users also complain of noise in the area, your report could help them get it resolved.