Hi Noir,
I'm curious, about where in NY you're located? I have family in the Buffalo/Western New York area who ski at Holiday Valley and I sometimes bring my board with me when I visit. Is that anywhere near you?
Back to the original topic... when conditions get icy, I typically feel good if I can continue to keep the board carving. I haven't thought much about how low I'm getting to the snow (or ice as the case may be), but as others have already pointed out keeping my body low to the board definitely helps. You may have seen references to "East coast surivival technique", which I interpret as a highly angulated, very low to the board (especially on edge changes), keeping as much mass as possible over the edge -- basically exaggerating everything.
Regards,
Michael