I'm a believer in pickle juice. Used it at several 8hr+ cycling races. Cramping be damned. Also use take a swig or two after strenuous workouts to prevent cramping later that day.
Yeah, I used pickle juice on the Adelaide Dirty Dozen (4000m+ climbing in 140km). It worked for me, and I have a tendency to cramping. But I also took salt when I felt twinges as well as the pickle juice, so I can't say for sure.
