Honolulu fire rescuers resumed their search Monday morning for a missing kayaker on Oahu's North Shore.  The U.S. Coast Guard suspended its search Sunday for 18-year-old Dayne Ortiz.  Ortiz disappeared Saturday at about 5 p.m. when his kayak capsized in rough waters near Makaleha Beach Park. The remnants of shorts worn by Ortiz were found late yesterday afternoon. His family confirmed the remnants belonged to Ortiz.  Meanwhile, friends and classmates of the missing Farrington High School student football player are holding an on-campus rally Monday night in a show of support for the teenager and his family. The rally is set for 6 p.m. at the Kusonoki Field on the school's campus.