A city parks instructor manual appears to ban city-sponsored kayak trips in the kind of weather that led to a chaotic and deadly excursion organized by Gonzaga University and sponsored by the Spokane parks department, according to a lawsuit filed Monday. Christopher Gormley, 18, died from hypothermia after his kayak tipped in the frigid waters of Rock Lake during the trip on April 1. He was one of seven people on the trip organized by Gonzaga Outdoors, which contracted with the city parks department to provide the equipment and guide for the trip. Gormley, a freshman honors student, was majoring in political science and was a recent graduate of Henry M. Jackson High School in Everett.