Yes oceanic topographic variations are measurable by gravitational measurements and altimetry measurments taken by FUCKIN sattelites.

FYI satellites don't exist on notbatman's pancake. I don't remember if they're projections or balloons or some other shit like that.

https://www.eumetsat.int/website/home/index.html

doesn't matter what an idiot believes, there are multi million dollar industries that utilise all that satellite data. I know because i am a freakin geoscientist.

I have worked that data, I have found potential hydrocarbon positions with similar data.

And then comes every flattard thinking he can negate ACTUAL WORKABLE INFORMATION with crap from youtube or their retarded photo cameras.

I have posted those before in this thread one way or another. But everything goes way over the flattheads heads.
But in any case someone could add to their argument arsenal regarding layman info on how someone could prove the earth is a geoid without being a scientist.

Constellations and moon phases: http://www.astro4dev.org/blog/2017/03/20/north-vs-south-constellations-moon-phases/

Climet: https://www.thoughtco.com/northern-vs-southern-hemisphere-weather-3444434

Solar system with HOME telescope: https://www.youtube.com/watch?v=fj-P031VlbU