Other opinions will vary, but if you are satisfied with the LSS1 I would leave it alone. The internet is swarming with poeple that claim the LSS1 gave clearer images than the LSS2, at least on older units.I have two -8s and the LSS1 and recently added the Sonarhub in order to use the HDI transducer at the bow. Im satisfied with my LSS1 down/side scan at the transom. If/when I upgrade units I will definitely go for the LSS2 or 3D SS, but until then, Im happy.I think the bigger transducer plug fits through the jackplate, if not, it could be routed behind/beside it.