Dialing in meter

[TJones]

lol. on the top picture is it definitely yellows ? and not tennis balls floating in ocean .no stupid questions ? right ? and on the bottom picture yellowtail high probability? the reason i am posting these pictures and running this thread is because i think i might be beginning to figure some of this stuff out and am just trying to make sure by getting different opinions. thanks for all input and advice. the meter i am running very well might be the best for the price range. an lowrance hds 7. the only drawback for some users is the added weight when coupled with the appropriate battery and mounting hardware. estimated weight minimum is easily 8-10 lbs.