Bringing this thread back to see what kind of results people are getting from transducer locations on the RT178. The factory mounted 2d on mine is over at position 1. My plan of attack as of now is to mount my transducer board up flush against the livewell drain. I will place the LSS-2 here relative to position 2 and place the 2D directly above the bunk between the strake and trim tab. Anyone have any luck with these positions or any other? I plan on leave the bracket in place at position 1 although it is basically useless for on plane with the 2D over 15 mph or so. I have a 50 HP with no setback/jackplate but it seems like the LSS-2 will work at position 2 with some trim up. Any help would be greatly appreciated.