RedactedNarrative: Watercraft #1 was pulling two tubes, one with one occupant (inside tube) and one with two occupants (outside tube). Operator #1 thought he was about 150 feet off shore. He was pulling the tubes past his dock. The inside tube and occupant made contact with the neighboring dock to the west of his. Tuber received injury to his leg. All were wearing life jackets. There was a rear facing observer in the boat. Operator received citation for reckless operation.