Re: FCV 620 or 585
I'm running the FCV620 with the transom mount transducer. Good adjustability, love the color screen. I do lose the bottom in rough water when doing over 20 kts, but I'm sure I could get a little better with a transducer adjustment, although not as good as a through hull. I have networked mine with my Garmin chartplotter. Networking instructions read like it had been translated from Japanese to English (go figure) but Furuno technical reponded promptly to my emailed questions.
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Captain of a Billfish Boat
member RFA and Oregon Anglers
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