Hawaii County's elected Prosecuting Attorney, Mitch Roth, is running for Mayor, one of two candidates who are vying for the county's top job.    In a conversation with Island Conversations host Sherry Bracken, Roth talks about some of the things he might do as mayor and what sets him apart from his opponent, Ikaika Marzo. Coming up:  Thursday, Sept. 17, 5 p.m. until 7 p.m.,  West Hawaii Forums Group is sponsoring a conversation between Mr. Marzo and Mr. Roth, which Ms. Bracken will moderate.  It will be available at Facebook.com/WestHawaiiForum