Transducer for Vexilar flasher - Duel or Single beam?

[FOOLFERFSHN]

Looking to buy a flasher this year and I am curious to find out what kind of transducer you prefer to use. Single or duel beam? Does it really make a difference? I watched a guy kill a limit of lake trout at Flaming Gorge last year in no time using a Vexilar FL8. I don't see how I would ever drive so far to fish and not have one of my own.

Thanks,
Jeff
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