Looking for some guidance on mounting a Raymarine HV-100 transducer. The install manual has a few pics that show the transducer mounted on a transom, I think picture #2 shows the correct location relative to the bottom of the boat. Picture number #1 I think is more for a general location relative to the prop. I watched some Youtube videos that recommend lining up the seam of the transducer with the bottom of the boat like I depicted in picture #3. Anyone on the forum have this transducer installed that can offer some guidance? Thank you.