Can someone give me some guidance on step 3 of noted on the Marine S.A study guide? 1.I can determine whether a plane is in a climb, or 2.what direction the plane is turning. But what are they talking about when they mention extending your pencil from the bottom center up to the horizon and if you meet water and shoreline extend the shoreline? I've seen posts from guys who have said they only missed one or two questions on the S.A. please help?