I do that with my bow mount. I have ciscos track system so it is easy to move. I have the balls out mount with a short arm and 12 inch arm. I use the short arm in back and the 12 inch arm when bow mounted. I have ciscos mount for my hds 12 on dash. I installed 12 volt cigarette plugs on the bow and back. You can just use the same power cord that way. You would not need another transducer. You can use a extra network cable from the transom area to the dash hds 12. That way you can use the transducer that is hooked up to the hds 12.