I have a 2015 QCW Sport Tower that came with a Garmin 300C on it. It has been a reliable depth Finder ETC. But I am thinking about upgrading it to some kind of Sim rad apparatus. Has anybody done this? Where my Garmin sits is a pretty small pocket to put a decent sim rad in. Has anybody come up with a good mount or a good way to upgrade here? What are any decent recommendations for an upgrade? I don't need it for fishing, I mainly need it for depth, and it wouldn't hurt to have a chart plotter. I am also not against sticking with a Garmin especially if I could use the same transducer or something....