Try to keep it inbetween strakes (if any). You may want to get another dual beam ducer to run deeper than the bottom of the boat. Keep the si ducer above to prevent damage from a stump. I think a replacement would set you back $250-300. Also, mount as far from the motor as possible. This will help prevent any motor wash from showing. Does the boat have any type of inset on the hull in front of the motor?