Gottaflag,
You dont have to leave at all, there is some good ice in Jackson county, and Washtenaw county. My brother fished vineyard 2 days ago and said there was plenty of ice to make him feel comfortable. I was on North Lake last night as well 5". But if you got the itch to go north try fletchers flood waters, might be a bit more than 2 hours but deffinatly worth it.
JJ