I live in a small town which is disproportionately popular with tourists. Because of this, people are hoarding property to rent out on Airbnb. I want to buy a house but will never be able to afford it unless the market is flooded with properties.
Again I'm not looking for anything illegal just some propaganda tricks to keep the tourists away for a year or two.
Try organizing with other long-term locals to tightly regulate and license short-term rentals. Structure a local ordinance so that you can run a genuine hotel or real B & B, but can't rent out a vacation home; eliminate the profit motive.
Additionally, I would suggest organizing to revamp zoning laws so that you can have high-density housing built in the town center. (Be warned that you'll get a lot of NIMBY people if you try that though.)