First let me say that fishing is the most reasonable and economical hobby/activity/past-time you could find in terms of the license to fish. $11 for the entire year! Seriously. Not just one trip...it's good until March 31 of 2014.
Go to a baseball game, movie, stop for summer ice cream...a license to fish is the cheaper alternative. And trust me, you can catch a fish on a Zebco with a worm/bobber. So why free fishing weekend? Maybe it's been a few years since you've gone fishing, maybe that neighbor kid or a nephew or your own kids have never been fishing. They don't need a license until they are 16. But anyone above the age does. June 1 & 2 is FREE fishing Saturday and Sunday in North Dakota!
So lose the excuse and GO FISH!