Not a touch unit. I have the skimmer and lss ducer mounted on the transom. I put a tm ducer and extra ram base on so I just move the unit up front with me. I was looking for advice on getting di up front and wandering it could be done by adding a lss ducer on the tm. If I had 2 lss ducers could I switch between front and transom? Or do I just get a di unit for the front?