I am a Lowrance guy myself and I have run SI on the trolling motor and the console. It has been my experience the SI is a really good search tool no matter the brand. But it is a broad search tool and didn't really care for it when I was using it on the TM, I found it to be of very little value at that location. I no longer have it on the TM and moved it back to the console and utilize marker bouys when I idle past something of interest. Then I can go back over it with the TM DI and see if I like it.
Good info bassman, thanks for the reply. That will be my setup for the time being, si on the console and di on the TM.