"A pad eye and a single cleat of your choice may be added to either side of the mast for cunningham adjustment, consisting of one line equalling not more than a 2:1 purchase."

Has anyone rigged this? Do we need to take our sails to a sailmaker to have a cunningham pad and grommet installed? I interpret this as saying we can install two cleats and two pad eyes one on each side of the mast. Is this correct? I am not sure how that would work using only one line.