When I purchased my 14 ft smokercraft the owner had a depth finder in the back and another up front on the TM. They were very old low grade h-birds,I replaced the rear with a HB 718. My question is about the front, I would like to have one in the front,but of course don't want to buy another system. Is it possible or make sense just to buy another transducer for the TM or share the rear transducer. Of course this would require splicing into the rear transducer? Any advice? Or should I just watch for a sale this week and buy another?