Duh? Yeah!

Ken, thanks for your reply. I think that sometimes a shooter doesnt want to rock the boat or sound contentious so he doesnt say anything to another shooter especially in his group. It may be possible that shooters were not aware of the rule which in itself is no excuse because really, common sense would dictate that you shouldn't have a cell phone out on a course. There is no rule against talking yet most courteous archers will remain silent while a fellow competitor is executing his shot, i.e. "common sense".