why I love this site so much, exact questions I have about my pontoon, lowes 21 foot set up for fishing with two fishing seats front and back. Transducer mounted on only place on back that made sense is between ladder and Hate having it there. great idea to mount new lowrance si on front to fish with and keep 3x on console for navigating and general. not sure if bigger transducer with lowrance would fit on TM but will look at it. Thanks for the suggestions CDC guys are the best!