If you have the lowrance with the 50/200kHz you may have the same transducer as I do. I think the lowrance transducer is the 83/200kHz. When you pull your boat, send me a photo of your transducer.
I think it is definitely worth while to run in split screen with dual frequency. Given that most our fishing is for suspended striped bass, I think the 50kHz is more useful most of the time. Of course I am not sure that Lowrance's digital processing is as good as Furuno's
(kidding of course, Ford-Chevy thing)