Water Supply No. 4 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 1 of 20 1.  How should the couplings be positioned when performing the self-locking twin-donut hose roll? p. 518 Choices: Opposite ends from each other Approximately 3 feet (0.9 m) from each other Alongside each other Connect them together