Side Imaging is probably the biggest leap in sonar technologies that will help you find offshore structure. Going from traditional sonar to down imaging helps a bit, going from side imaging to 360 imaging helps a bit, going from 360 to the new Panoptix deal is pretty helpful... but the biggest jump is from down imaging to side imaging. You can suddenly cover way more water in a much shorter period of time and get a much clearer image of what is really down there. If you get it though, make sure to put in the time studying it and how to operate it properly. I know a lot of guys who buy them, spend about 30 minutes trying to learn it, and then never look at it again. If you put in the time to learn how to use it effectively, it will "up your game" BIG TIME.