Hey, there's nothing on the FAQ about this...
If I was on a Flat Earth and wanted to find my current location quickly and accurately, how would I do that? Obviously GPS is out since it can't work with FE. For a previous attempt, I used a number of accelerometers (phone and a few nabbed off kit at work) to measure heave/pitch/roll during flights and didn't notice anything out of the ordinary, but they wouldn't have noticed rotation.
I've got a lot of continent-hopping planned for the next year or so, so it'd be nice to measure any deviation in flightpath or speed when on an aircraft or boat that would indicate the pilot trying to extend/shorten a route to mask the differences between the real world and the round-earth model they're supposed to be using as their reference.
Tell me the tools to take the measurements with (and the raw data/evidence you'd need to be assured of the veracity of those data) and I'll post them as I can update you!