Can suck it. I'll never live in a development that has one. In this particular case (linked to) it's simple, just write a provision that says Medal of Honor recipients can have a vertical flag pole limited to 21 feet in height. End of story, you stupid asshats.
Yah, yah, yah ... there are benefits to living in a development with HOA's, I know. But they can also be invasive as all get out, and the fact that a group of asshat neighbors with potential axes to grind can slap a lien on your house? To hell with that!