We have had discussions here in the past about this type of thing. I call
it "improvisational lighting" and I don't see any difference between
making
up the lighting rules as one goes along, and making up the crossing or
overtaking rules as one goes along.

This kind of thing is largely why most commercial operators have such low
opinions of recreational sailors.

* Perhaps with some reason. But *my* first duty is to survive and if
breaking the rules means I do that rather than getting mown down by a big
ship who should be giving way to me under the same rules then that's fine.
There are many cases of yachts being mown down when completely innocent and
abiding by the rules which is why recreational sailors have such a low
opinion of commercial operators.

I know of no commercial ship that has been run down and sunk by a yacht,
whether or not it was in the right ( or wrong!)
TonyB