I think they are cool and a usefull tool if used in the right way. When I last looked into this IIRC that the transducer has an element that droops from it's housing a few inches in order to get down enough to side scan. Not far enough to leave the housing or tethered in any fashion. Now, some adventurous soul will come up with a way to steer the housing and the transducer element keyed into a positioner guage on the dash
