I would love to have a sizable vessel that is mostly wind driven but also has a powerplant for getting around in tricky places, the trick is to get something that will cost you virtually nothing to spend on. Could be electric with a battery bank much like a golf cart motor or motors, charging can be wind generator and solar panel.
Optional is the propane powered diesel engine when you need serious power for against currents or such.
But here is the big picture, when America totally goes bad and Obama has a statue a mile high in every state the best place to be is offshore, beyond the territorial limits.
If you gave a cabin up in the hills google earth will find you and so can anyone, being mobile in an RV can work as long as you can get fuel.
Or just Escape from America, get far away and buy a truckload of popcorn and just watch from a safe distance.
My bolt hole is in Australia, already prepared, just have to endure the long plane trip.
You’re describing a sailing catamaran - with lots of solar panels and a couple wind generators.
Electric drives are available, but you still need some form of fossil fuel power plant to charge your batteries.
You can live off of solar and wind, but they are not quite enough to move boat when the wind dies.
We joke about watching ‘Rome burn’ from a boat...I hope this does not come to pass.
The problem is, if America goes down, so does the rest of the world.
Until then, might as well enjoy messing around on boats.. =)