Scott Bowles, 37, had been missing for a week when a kayaker came across his body.
Bowles had moved to San Diego from Arkansas at the beginning of 2014 and was living in Ocean Beach at the time of his death. He often visited his daughter, who lives in Julian.
His father, John Bowles, told the medical examiner that his son had begun having problems with recreational drugs, including bath salts, three years ago.
Scott Bowles was a Navy veteran who had worked on submarines. He was preparing to begin a new career as a heavy equipment operator for a company in Lakeside.