1. Are there any prominent Flat Earthers that have ever converted to Round Earthers? Vice Versa?
Most FE'ers start out as RE'ers. I am sure there have been FE'ers who were raised as such, and eventually came to conform with society's wider views.
2. How were you able to make the flat earth map? Did a flat earther sail around the Ice wall and map it out? Kudos if you did.
The maps are usually just sketches used to illustrate the concept. However, the Universal Zetetic Society (the progenitor of the Flat Earth Society) did partially map the Earth.
3. What would happen if you cut a slot in the ice wall to let water through? Would it drain the oceans?
There is no simple answer to this question, as it depends on which model is being discussed. However, the short answer is no, as most see the ice-wall as an icy continent, and those who see it as just ice usually don't think it constitutes the Earth's outermost edge.
4. Where can I learn more about the mysterious antimoon? Wikipedia seems poorly informed.
The best thing to do is search here on the forum. Use the search feature at the top of the page.
5. I feel like I need to learn more about this dark energy model in order to properly give this theory a good thinking. Any good reads?
Same as above.
6. How do you feel about homemade spacecraft such as attaching iphones to weather balloons? Shouldn't someone try releasing such a balloon near the edge of the ice wall so that we can see what the edge of the earth looks like? OR maybe even rent a small aircraft and fly over the ice wall to get a good picture of the edge. I know it would be a lot of work, but think of how many people would convert to FET if you could pull this off.
Most feel that such experiments produce results that conform with FET. Most theories about the ice wall preclude the sort of experiments you suggest.
Sorry to bother you, I'm just terribly interested in this all, it's just never occurred to me that everything I had been taught could be wrong.
No problem! Along with politeness, inquisitiveness is one of the things we like most here at the Flat Earth Society. You display both.