Panoptix is a very powerful option but only a select few units (Garmin only) have the capability. Due to the extra cost for the secondary transducer I don't know of anyone who uses it yet. I've played around with it in Demonstration mode and can see how it would be useful to mark fish ahead of the boat, within a 60 degree cone, and troll to those targets with my baits at the correct depth. My Garmin doesn't support Panoptix but neither does my bank account. If it did I would get it in a heartbeat.