Thanks for the responses.Wednighter good q. I think what Aljoe07 is saying could be the right answer. Like I said I'm no expert on exotic matter but I think another possible solution for this would be the end of the curved space at the "balloons blow hole" from each side still not being 100% and causing additional travel problems.

I don't think its as easy as saying curved space starts at point A and ends at point B giving a nice easy enter/exit point for the island. Instead it might be more realistic to say it is less inhibitive at point A (compass 325) moving outwards rather than inwards and less inhibitive at point B (compass 305) moving inwards rather than outwards. This might make sense considering the two points are relatively close together on the compass (at least similar directions for the closure in curved space). The most realistic solution for this could be that although there is a "blow hole opening" it only exists between compass points 305 and 325 and even then it is still unstable at best.

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