If you get a FF with internal gps you can swap it back and forth between the two mounts/transducers. That's how I have mine rigged. I've got a HB 788ci, gps/chartplotter with internal gps ant. I had an old Wide 128 HB on the console, and a grey scale HB 565 FF on the front. All three used the exact same mount. I ran my transducer cord on the new transducer (side beam unit) to the console and into the old mount. On the front, I could use the same transducer that came with the 565 (dual beam unit), so I left it alone. The 788 has mode select for either dual or side beam transducers. I'll move the head unit forward when I start fishing and switch the mode to dual beam, and vice versa. Works good, and not $xxx worth of trouble to buy a second pricey head unit.