Have you ever been exploring and ran into a river only to decide that you want to see what's on the other side but dread the fact that you're going to have to build a boat just to do so? Why not be able to use a normal Log as a flotation device to carry you to the other side? Sure its cumbersome and hard to maneuver so you won't be using it for those long trips down river and through lakes but it will save you time and effort when all you want to do is cross a river.
You start by getting yourself a log. Throw it in the water. Right click > Avast! Simple as that. Because of its size and shape, the Log is only 1/3 the speed of a Boat and it cannot carry any weight other than yourself at the risk of sinking. Plus you will need both hands to hold onto the Log while you paddle yourself across the river so you won't be able to carry anything.
Thoughts? Suggestions?