Going through the Arizona desert years ago, you could see five or six thunderclouds that reach thousands of feet into the air. One was almost over us, and the rest in a line stretching to the north. The last one's top was barely visible and you could tell the curvature of the earth by how each one was positioned. The furthest one was probably -150 away. to see that here in Ohio now but in a flat desert, it is possible. I was on a round spin thingie at a playground once and going fast enough, you fell off as it spun.....hmmm....flat earth would do the same thing. crazy folks.
I got banned from the 'Moon Landing Conspiracy Society' for believing in solar eclipses.