The arch shape comes from having the transducer at just the perfect angle and those little fish have to be in the sweet spot of the transducers cone angle. If you are using a shoot through the hull transducer then you will never have those perfect arches. Well, you might get lucky; but most likely you won't.
Those straight lines mean the same thing as those pretty arches, question is though... Do you know what the different colors of those lines mean?
Edited by grout-scout (01/11/16 10:05 PM)