I keep a ground floor window open at all times for my cats to
get in and out as they please.

In the last several months, a feral tom  has been getting into the
house
through that window at night,  and the sounds of him fighting my
cats used to wake me up 2 or 3 times a week around 3 am.
I would get out of bed and run into the kitchen but by the time I
would get there, I would only see his tail disappearing through the
window
into the night.

So I propped the window up with a stick, tied a cord
to the stick, and ran the cord into the bedroom.
About a month ago, I heard them fighting, and I pulled
the cord trapping him inside. He went completely wild,
screaming, bouncing off walls, knocking furniture and
objects down, etc.

In the end, he hid in a cupboard where he spent the night, and
I released him in the morning, thinking that he'd be scared enough
of the experience to not come visit again.

Last week, he started coming inside again. Last
night, I again trapped him inside, but this time
I managed to get him into the cat carrier. It
wasnt easy or pretty--I had to use an improvised
noose on a stick thing, like the dog catchers
use (I used 2 tubes from a vacuum cleaner and
plastic clothesrope). I'm sorry I had to do it that way, but
he was again so utterly nuts and wild that I couldnt
handle him.

So now the question is: what should I do?

1. take him to the vet to have him neutered.
The problem is that he's a wild animal, so
the vet may get hurt.

2. take him to the humane society: they'll
kill him, so not an option

3. drive him 20 or 30 miles into the
boonies and release him there.

Any other options?
Thanks.