In Lord of the Flies, what reason does Ralph give for the boys' defection to Jack? What kind of leader is Jack?

Ralph says, in chapter 9, that the boys are going to Jack's tribe so they can have fun and act like children.  He says the boys are leaving him so they can hunt, pretend to be a tribe, and put on war paint.  Jack offers the boys excitement and lures them with food from his hunts.  He doesn't tell them that he will control them completely however - that's the lure and the trap of a dictator which is what he becomes.  Ralph realizes the need for organization and order.  He knows that to survive, they will have to work.  He knows that they cannot be children any longer, that they must become responsible.  He doesn't know, however, how to communicate this effectively to the other boys.  Jack instinctively knows how to entice the boys with tales of fun and adventure and promises of food - the equivalent of wealth.