This weekend is the Minnesota walleye opener.  It has been a crazy spring and most our lakes are still ice covered.  Some of the small lakes are opening as we speak.  There will be some open water on the Gull Chain for this weekend.  That is where I would go for crappies and walleyes.  Think shallow for walleyes, 4-8 feet.  I would  go with small jigs and fathead minnows.  I guess this year we'll take what we can get.  By next week it we should have a few more options.