Actually my buddy tried something similar with the flat earth society's "find the edge" thing. He got so into proving curvature with a homemade level that he dug a trench across his entire lawn. His wife made him fill it back in, but now their garden has the weirdest irrigation system.
Wait, isn't that just a convoluted way to water plants though... like he basically stumbled into a solution by accident? I can't help but think the earth society might have been after something real, just not in the way he thought.
That "homemade level" bit got me. I tried proving the Earth wasn't flat with a laser pointer and a hill a mile away. My results were so bad I just went inside and turned on the TV.