Hey folks, I have a Skeeter sx170 w a 90 hp Yamaha four stroke motor, Im really wanting to get a si unit for my boat and when I went to the Skeeter dealer today the guy told me that side imaging will not work on my boat wo a jackplate which Skeeter doesnt recccomend. I need some advice on this, will the transducer work wo a jackplate? Thanks for the advice.