I got a sweet deal on a new Lowrance X18C and picked it up for my new boat (19ft Polar deep V). It comes with the 21 degree transom mount transducers but I am thinking about having a through hull puck installed instead. I am concerned the kiddies will end up pulling or standing on them when swimming or a tow rope for tubing may get caught on them. I'm just curious if I could expect to loose any performance with this decision.<br /><br />Helpful advice greatly appreciated<br /><br />Kevin