So....I know Shefly is one of the hearty souls riding out there on the frozen tundra and I would appreciate any others who might be able to provide some input as to the following:

I have regular studded tires, which are fine generally, but did nothing but slide out when I got onto the real ice. I need something that will really grip - a friend of mine says that they aren't really making extreme studded tires anymore and that the only way to get good ones for ice riding is to make your own. However, I have heard some decent things about Nokian - Do they REALLY grip riding trails which have ice coverage? I find myself sliding out on any uphills, downhills, off cambre, etc. etc....I need something substantial for winter trail riding in our area.....

Suggestions, anyone? Or should I start making my own?