Hi all, I'm trying to install a helix 7 si g2n transducer and high speed transducer on the back of my 2000 stratos 20 ss. I'm having trouble following the directions and don't find many decent videos on how to properly attache to the back of my boat. I took off my old lowrance strucure scan and high speed transducer. Im not sure if those spots where the best.... I need help guys! The picture shows where the structure scan was and the high speed transducer was to the right about 6 inches away