Well, my HF6V is mounted on my chain-link fence. It was originally on the back section, roughly centered. I had to move it to the side fence near the back after some storm damage 2 winters ago.

Works like a champ. Key was to make sure the feed point is above the top of the fence, of course.

I've also added a few radial wires into the yard and (with his permission) along the back of my next door neighbor's yard as well.

Now, I don't have an HOA to deal with, so I can't address how they would react to it.

And not wanting to sound like a broken record, but can you put up a flagpole in your front lawn? You can find some fiberglass ones around 24 feet tall online for about $75 including mounts... run a wire inside the fiberglass and no one will ever know...