[Mithalwen]

Thanks for your comments. Some of them chime in with my own speculations - thanks for the ref to the letter Zigur, I can't remember reading that one.

I need to find the text reference but I think Gil-galad solicited the help of the Numenoreans to combat Sauron when he attacked Eregion but the messages may have been sent by Numenorean ships rather than Elvish ones.

Now there may have been a sense of letting well alone and of the prominent elves remaining, Elrond and Gil-galad were Middle Earth born, Galadriel either still under the ban or not desiring to return and Cirdan had his peculiar destiny.

Now regardless of which parentage Gil-galad is given he may have felt he had a special duty or destiny to maintain the struggle against Sauron. Elrond too but he perhaps of all would have the most motivation to visit Numenor? We don't know a lot about his relationship with Elros..maybe a visit would me more painful than a clean break.. in the same way he could have visited Arwen again before he sailed.

Or as has been pointed out it may be that the Elves did not want to impose themselves on the Numenoreans but once they had made contact elf ships were merrily going back and forth and they are just never mentioned.