After 18 months or so of using my HB 898 I'm understanding it more and more. However, I can't get a clear answer to one thing. I find crappie on the screen and I immediately throw a marker off the back of the boat. I'm not sure that is the best way of positioning the boat. I may be too near, or may be too far away. I'd rather be 15 or 20 feet away from them and cast toward them. What is the best way to position the boat after crappie appear on the screen? Oh, my transducer is mounted on the stern.