Vonkaputous
I have been on a variety of roller coasters that end up splashing in the water, but Vonkaputous got me more wet than any other coaster I have been on.  The primary reason for the soaking is the walls situated close to both sides of the track.  Waves rebounded off the walls and came right back over the car.  I was swamped with a wall of water!

©2012 Joel A. Rogers.