I'm reading ENaG now. The question arises for me as to whether you can keep Rowbotham's FET without accepting the rest of his ideas, that follow from a rather literalist reading of the Scripture. Ditto especially for Voliva. Both men were exceedingly devout (which is not surprising, given when and where they lived).
Also, one wonders how they would have responded to space flight. Would they have accepted that it did really happen, or would they have insisted on the "conspiracy theory" that so many here talk about?
The next question is the following: Can one believe in space flight, and STILL believe in the Flat Earth? That is a 64 million dollar question. Personally, I don't see how one can believe in FET at all. I mean, Rowbotham's experiments sound great until you look at the world from ISS. Then you're screwed. And I don't know how you can reject space flight. What is the FES going to do 100 years from now, when people are literally living on the Moon?