This is the 3rd winter in a row I'm planning on making a run down the Mississippi from Grand Rapids to Brainerd Mn. Looking at the maps it is the longest stretch without a dam on the upper Mississippi. It works out to 174 miles if I don't check out any of the tributaries. The past 2 springs it hasn't happened because of the river still locked up or other issues. 3 days and 2 nights should leave plenty of time to check out a few tribs on each stretch. Got the fingers crossed for good weather and open water.