Where would the best place be to mount a transducer that transmits through the hull? All of the specs say that a boat must be a singly layer fiberglass construction. I am rather sure that these humingbird puck transducers work well in our boats but wanted to get some input before purchasing?
http://humminbird.factoryoutletstor...minbird-300-Series-Transducers-XP-9-20-T.html

http://humminbird.factoryoutletstor...minbird-300-Series-Transducers-XP-9-20-T.html