Mike W,
I assume that you are talking about open water.
Most everyone in the Twin Cities has at least heard about the annual Lake Minnetonka Tourney that occurs (usually) on the last weekend of April.
I have prefered to hit the Tourney down on Cedar Lake near New Prague on the same weekend, for many years.
Chris Tuckner, drewsdad and fishlees have all fished this Tourney before as well.
It is organized by and benefits the local sportsman’s club.
For more info call or stop by Simon’s sportsbar in New Prague.
It has atracted a few locally well-knowns and does have good numbers of decent crappies entered.
cheers