[Boromir88]

An excellent argument Angry Hill Troll. To an extent I think you are right, obviously I did not consider those factors. For we are told this:

But Sauron could not discover them, for they were given into the hands of the Wise, who concealed them and never again used them openly while Sauron kept the Ruling Ring.~The Silmarillion; Of the Rings of Power and the Third Age

So while Sauron had the Ring, they never used the Rings openly. Now what does "openly" mean. Because we know Galadriel has hidden her ring, for in Lothlorien Sam can not see it on her finger. But does that mean that they still did not use them? I think it's likely that Cirdan had used Narya because of this:

Of the Three Rings the Elves had preserved unsullied no open word was ever spoken among the Wise, and few even of the Eldar knew where they were bestowed. Yet after the fall of Sauron their power was ever at work, and where they abode there mirth also dwelt and all things were unstained by the griefs of time.~ibid

So the Rings were being used after Sauron's downfall.

Now I may have been wrong to think that Cirdan could have used the Ring to "rekindle people's hearts," because as you say there is a limitted amount of time to do this. Assuming Cirdan gave the Ring as soon as Gandalf arrived (which that's what it seems to me) he would not have had it in the wars against Angmar. But the question is what does "openly" mean while Sauron still had the One Ring in the second age? Does that mean that they kept it on the "down-low" and hid them, yet still were able to use them? Or does that mean they couldn't use them at all? For Cirdan was present in the Last Alliance, could he have used it again? I don't know, it's up to debate now. But, I think it's highly likely that Cirdan did use the One Ring AFTER Sauron lost the One Ring, whether he used it before, looks to be up to debate.

A side note that I find rather interesting, and how ironic this is. Tolkien's death was 1973, 9 Rings of men, 7 dwarven rings, 3 elven rings, the 1 ring...hmmm, how funny some stuff seems to work out. I'm sure a lot of you noticed this before, but I just thought about it recently.