Sure, its default assumption as there are differences in hemipheres. But why can't aether move in ways that earth is split at poles and center of stars rotation is where aether exits? Or I am sure someone can think out why it can be at 45 degrees for example.
Needlessly complicated for starters, and wouldn't work under the pre-existing definition of aether.
1. Good question. I don’t know. I’d say an assumption is something that is neither observable nor proveable. I agree with you. But something based on an assumption is still an assumption, even though it is not necessarily a new assumption. Still, e.g. assuming that there is aether doesn’t mean that this aether can flow nor that it flows. So, in this case I’d say there are two assumptions made, (i) aether exists and (ii) aether does flow.
2. Yep, and that’s the funny thing about aether. It would simultaneously flow everywhere and nowhere. The aether-paradoxon I’ll call it from now on.
Anyway, the aether wouldn’t need a „route“ or something to flow there. There wouldn’t be really a border between „nothing“ and „something“. "Nothing" is just the abscence of something, it's no phyiscal place since there is no space/aether.
What would happen: I’d imagine it as an explosion where the whole aether would instantly "explode" as it flows into nothing and creates something. So, aether is somehow god, one could say.
3. You are treating aether like it’s water. But it isn’t, aether is SPACE. What you are describing would mean that an iron bar would stop the flow of aether. Or in other words, space(=iron bar) would stop the flow of space(=aether).
4. I think you realize yourself how ridiculous this sounds.
Anyway, have you ever thought what low and high concentration of aether would mean?
1. I think the two assumptions are more 'aether forms concentrations' and 'those concentrations flow.' Aether exists without those two properties regardless: it's just space. It is accepted that those are assumptions, but all sciences relies on taking certain things as axiom.
2. Again, I don't think your definition really makes sense. Part of the model seems to be that space exists regardless stretching out in all three dimensions. This idea of nothing really doesn't make sense, either it's a nothing that can be filled and would cease to be nothing, or there is no way for aether to flow to it. Even accepting the odd idea though, it would be easy to handwave an 'edge' to space and aether slowly dissipating into that nothing, it's just so far away that it hasn't reached us yet.
3. It's only about movement. We know full well that force prevents movement, and whichever reference frame you're in part of the iron bar would be trying to move, while the rest is stationary and simultaneously exerting a force. I really don't understand what your objection is. It's not "Iron bar beats aether," it's "the force exerted by the bonds in the iron means said iron is under enough force to move back along the points in space that are flowing." Think of it like a conveyor belt. If the conveyor belt is smooth, you can rest something half on it, and half on a table next to it, and it'd barely be affected. Speed up the conveyor belt, and there'd be more of an effect. Make the conveyor belt coarser, there'd be more of an effect: make the non-moving surface coarser, there'd be less of one. Put a giant wall in the way and nothing would get past it. It's the same principle: the space that an object occupies moves, but forces are perfectly capable of making the object occupy different points in space.
4. There's a difference between sounding ridiculous and sounding different.
High and low concentrations are simple, regardless. The analogy he uses is that if, under relativity, space is a blanket, under DET it's an elastic blanket. Stretch it, we notice it gets thinner: that's a low concentration. It's just a gauge of how, well, concentrated space is. A high concentration means more space means more distance. Low means less.
I don’t want a perfect diagram. Even if a whole globe doesn’t fit on a toy globe, a toy model of a globe can still be manufactured. So to say: Show me a toy DE 
May I ask you : Which university are you attending ? I’d of course understand if you don’t want to say it.
Overall Jrowes model is really the work of a maniac. His model tries really hard to explain things, but there is no underlying logic in it as we have it with globe earth. There is no way, anything could be calculated, any orbits, any eclipse, you couldn’t even calculate sunset or sunrise. It’s all just „aether!“ without any logical foundation. Read my thread about the bird-shaped world. His model includes about the same amount of logic as my model does. You could invent simply ANY model that jumps into your mind and defend it by creating/inventing more and more. Still, this model wouldn’t be correct or make any sense ; it’d just be a (useless) thought experiment.
He's given several partial diagrams, such as:
http://i.imgur.com/udJzK5B.jpgNone of them are going to be complete though, for the reasons I gave before.
Aether is actually defined, that's what makes this model different. There are plenty of theoretical ways to calculate those things; know the rate of rotation of a few adjacent whirlpools, know the altitudes they're at, you could extrapolate overall behaviour and you'd have a good gauge of everything from the Sun to the stars.
For distances, they may say they are wrong, but let them try to say it to real geodesist, or navigator, or meteorologist, or astronomer...
Finally, it shows we have more conspirators around than ordinary people.
For gravity, I don't rely on forum's search routines.
Try on Google.
Search for something like "flat earth society cavendish experiment".
Those people are said to be simply mistaken. Not many people actually map out large scale distances, a lot of work is done assuming RET.
I gave one response to the Cavendish experiment before. They say it doesn't apply to all objects, just the limited sample used in the experiments.
That's an interesting thread. I don't think that the poster realizes that Einstein built special relativity on the questions raised by the Michelson-Morley (sp?) experiment, that pretty much spelled the death knell for aether theory. If the aether exists then it is awfully tricky to describe. Up to now, no modern theory has found a need to invoke anything like it.
Not saying it doesn't exist, but it would be a most curious form of .. Matter? .. Energy?
Sorry, didn't read beyond point 1. But ignore me. I don't really care either way.
Aether is just a word. Einstein actually used it early-on to refer to spacetime, in an effort to appeal to the sensibilities of the time. It was phased out, but that's the idea. The aether under the DE model isn't the luminiferous aether disproven by Michelson-Morley.
It's said to just be the fabric of space (much like relativity applies to), with the added property of being able to form concentrations.