Holy crappie, that's why I don't use them things - too complicated.
I'd spend more time pressin buttons & watchin a screen than I would just catchin fish.
Hope it works out for ya, what the heck is SI anyway - I thought he was on Duck Dynasty
S = SIDE I = IMAGING
Where you get a moving picture of what is to the side of your transducer. Can program to see just one side, either left or right OR can program to see both sides on screen at the same time.