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Funny you say this, I just wrote about this in the growing large plants outdoors thread in Tom Hill's forum. To quickly answer your question, I hadn't before but now I do. Hope your season is going well.
I've found it's effect on harvest dates to be mostly non-existent. You should be looking at your crystals and hairs as well as the plant as a whole to determine when to harvest, the moon should be of little concern as far as harvest dates are concerned. Sometimes harvest ends up being around the harvest moon but that's mostly due to chance.
The biggest concern you should have around a harvest moon is rippers. More often than not if you are going to get ripped during the night, it's going to happen on or within a few days of a full moon.