After eight years as president and manager of the Sioux City Explorers baseball club, Ed Nottle has announced his resignation. Nottle is 61-years-old and says he does not want to do it full-time.Nottle says he will miss Sioux City and the Explorers organization.Nottle’s pitching coach the past two seasons, Pat Tilmon, says Nottle was a player’s manager. He says Nottle was great at running a 22-man ship and keeping it on course.Nottle spent eight years with the Explorers and was named manager of the year in the Northern League on two occasions.