In Raging Rapids you have to try and make it to the end without crashing your boat. You have to make your way through fallen trees, rocks, shallow water, and tight turns. In some parts of the river it is crazy while in some parts it is calm. How many boats will you use?
It's a nice little mini-game if you just want to waste some time. I played it yet something didn't feel right. Maybe that it was to short! If I were you, I would probably increase the length of the map. All in all, it's a good map.