Center Ossipee resident seeks boaters who witnessed a jet-skier harassing loons and geese near Indian Mound.
New weeds in Danforth Bay will be dispatched by professional diving team.
Editorial says boaters need to take time to learn about the problem plant.
Presentations and instructional boat rides are among the day's events.
Tales of Ossipee Lake event will benefit the "Window on Ossipee Mountains" project.
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