IMHO the biggest problem with the FE Model is the lack of a decent map which shows all countries, continents and oceans in their correct relation to each other and correct proportions to each other.
So far both FE maps I have seen are a major distortion of reality - continents the wrong shape or size, distances between continents are grossly misrepresented and you can't even agree between yourselves which map is correct.
But I'm sure you will all agree that when you drive long distances eg from east to west across the USA, Australia or Europe, that the maps you can buy in petrol/gas stations give you very accurate distances. And when we see the map of just one country it's shape is fairly accurate.
But this seems to be a HUGE stumbling block for the FE'ers, as every map projection introduces distortion in one way or another. Now this is because the earth is spherical and although it is easy to create a globe of the earth with all countries, continents and oceans in correct sizes in relation to each other, this is an impossible task when drawing maps on flat pieces of paper.
BUT ... if the earth is actually flat, then drawing a map which shows all countries, continents and oceans in the correct proportions to each other should be a super easy job !!
For your interest this website
http://thetruesize.com might help you see how much distortion occurs when a spherical earth is projected onto a flat map.
From the "About" page of this website - "It is hard to represent our spherical world on flat piece of paper. Cartographers use something called a "projection" to morph the globe into 2D map. The most popular of these is the Mercator projection.
Every map projection introduces distortion, and each has its own set of problems. One of the most common criticisms of the Mercator map is that it exaggerates the size of countries nearer the poles (US, Russia, Europe), while downplaying the size of those near the equator (the African Continent). On the Mercator projection Greenland appears to be roughly the same size as Africa. In reality, Greenland is 0.8 million sq. miles and Africa is 11.6 million sq. miles, nearly 14 and a half times larger."
So I had a little play around with it... took some screen dumps ... and these were my results...
Australia superimposed on Africa - The bipolar map shows Australia almost the same size as Africa and the unipolar map (with the north pole in the centre and Antarctica around the rim) show Australia as being about half the distance from north to south as it really is.
Australia and China superimposed on Africa (I rotated China)
Australia, China and USA (the 48 contiguous states only) superimposed on Africa (China and USA Rotated)
Australia superimposed on USA (48 contiguous states)
China superimposed on USA (48 contiguous states)
Greenland as shown on Mercator Projection - it looks almost as large as Africa !!!
Greenland superimposed on Africa - showing the terrible distortion of the Mercator Projection especially closer to the poles. Which makes sense because closer to the poles the lines of longitude get closer together until they all meet at each of the poles, whereas on a Mercator Projection the lines of longitude run parallel from north to south
And the most distorted continent on the Mercator Projection is .... no prizes for guessing .... Yep you got it !!! ANTARCTICA !!
Have a play around with this site... it really highlights the impossible task of fitting a spherical earth onto a flat map and yet still have the sizes of all of the countries and continents in proportion to each other.
So there's your challenge Flat Earthers ... come up with a map that works ... until you can you are up shit creek in a barbed-wire canoe using a toothpick as an oar !!
But I guess you will all just say that "they" (whoever they may be) have lied to us about the sizes and shapes of all of the countries, continents and oceans !! To which I say... get in your car, set your trip meter to zero, and drive !!
PS - Interesting to superimpose Russia onto USA, and Canada onto USA. Also USA (all 50 states included) is actually larger than China !