Pipeline and construction crews are a genuine mid-term tenant base and in some rural markets they pay better than nurses do, because the alternative is an hour of windshield time each way to a motel. The catch is that they're project-bound rather than seasonal. When the segment moves down the line, your demand doesn't soften, it stops. Two or three houses filled with one contractor's crew is a single tenant wearing three hats, and you should underwrite it that way.
Who pays matters more than who sleeps there. Crew housing is often booked and paid by the contractor or a housing coordinator, which is a stronger payer than an individual and a much better lead source, since one relationship fills the unit repeatedly. Ask around for who currently handles lodging for the pipeline work. That's your marketing channel and it's a phone call, not a listing.
Insurance-displaced households are real too, and in storm country they can be the steadiest piece of the year. Those placements usually come through adjusters and the housing companies that carriers use, and getting on those lists takes registering and following up rather than advertising. Expect the units to be booked at rates set by the placement company rather than by you.
The state park traffic is not mid-term. Park visitors want three nights, which puts you back in nightly rental territory with whatever county rules attach to that, and rural counties do regulate this in places. Check yours rather than assuming rural means unregulated.
One number to run before you furnish: on an $1,100 furnished rent, what's the unfurnished long term rent? If it's $850, you're spending $9,000 of furniture to earn a $250 premium and you'll be inside three years of payback with crew-cycle vacancy on top. That ratio is the thing that kills rural mid-term, not the demand.
