Possible Clues:

• Rely upon
• Dangle - rely
• Trust that one may start to depart before the finish
• Count on or hang from
• You may be sure it's the last of the departure, in short
• Rely on having record in study before start of day
• Place one's trust
• Place trust (upon)
• You may rely on it: 'e is missing from the deep end
• Bank said to be good place for diving