Dubay's funny but we don't say or imply that Australia's upside down and Connecticut's right side up because the earth's a sphere. All the yachting experience around the Earth is right side up in whatever hemisphere and all the keels point down to the collective center.

You fly east to go from Tokyo to Moscow, Moscow to London, London to New York, New York to LA, and LA to Tokyo.

Just curious: how do Flat Earthers explain that?

That's simply untrue.  I'd put money on it that you're not acquainted enough with the FE model to be qualified to make this claim and that you're just saying this because you're attached to the globe model.

And that is absolutely false that a perfect model is necessary to establish the basic principles, that there is no curvature of the earth.  This curvature has never been measured or established, and we have thousands of experiments out there that falsify curvature.  So there's an abundance of evidence that there is no curvature.  This does not require there to be a perfect FE model.  Scientists work with hypothetical models all the time.  In fact, 90% of their junk is nothing more than "theory".  They've been working with Big Bang for decades and keep having to make stuff up (like this hyperinflation phase and dark matter) to prevent it from being falsified.

Thousands of experiments that defy globe math cannot be explained by the deus ex machina of "refraction" that is rolled out to explain all of it.  To refute FE, the globers would have to come up with some explanation for light curving around the globe of the planet.  Perhaps they can claim that it's some kind of electromagnetic phenomenon that consistently bends light perfectly around the globe.  But the "refraction" explanation is utter hogwash and has been falsfiied by 2-way laser experiments.