report runway incursion non-towered airport?

In a word, Yes.

Not very long ago I witnessed a near miss. I filed a complaint with the
FAA annonymously via the internet. They called the airport to see who
was flying at the time. Well, since it happened a hour after the admin
building closed... The FAA tends to get lazy at times.

Meanwhile, had the two aircraft collided, I would have possibly been
immolated in my car. There was a plane in the process of departing and
I thought he was trying to be cute the way he began a turn as soon as
he rotated (get some Navy types now and then). Then I noticed another
a/c making a hard right turn, right over me who had been on final. Had
they collided, I was close enough, on the high-way that runs past the
end of the runway, to have been part of the ensuing gas shower and
fire.

I have had similar things happen with biz jets as you have just
mentioned. They get so busy with all their stuff that they forget there
are others getting clearances as well. Seems that because of a biz jet
that was in a hurry, I wound up with having to do an intersection
departure to keep approach happy (we were at a non-towered field with
an RCO). Why? because the biz jet cut me off as I was taxiing to the
runway!

So yes, I would at least file an ASRA about it.

Later,
Steve.T
PP ASEL/Instrument