No person shall launch or operate manned gliders, including, but not limited to, those
now commonly referred to as "hang gliders", from the top or face of any bluff or cliff
bordering the Pacific Ocean in the City, without first obtaining a permit from the
Manager of the Marine Bureau designating the time, the place, the operator and such
conditions as may be required to assure public safety. The Manager of the Marine Bureau
may refuse to issue any such permit if in his opinion to do so would cause undue danger
or inconvenience to persons using the public beach or other property, or would require
an undue expenditure of public funds to protect users of the public beach or other
property.