This is a great example of arches. These
fish were in my cone angle and now they’re gone. If those fish were still in here under my cone angle under the boat there will
be a solid line. Now the neat thing about the lines that will go up and down you
can tell those fish are there but it’ll still be in the screen. Right now there
are no fish down there. If I take my bait and I drop it down we’re gonna watch…my
bait go down…okay so that’s me – that line. A line means that it’s in under the boat.
That signal is still there. If I raise it up it comes up. If I lower it it goes
down. That means that I am still there – I’m in that signal. If there’s a fish
there he’s going to show up as a line so I can watch the two lines meet. If
there’s a fish down there I drop my line to meet the other line which is the fish.
That’s the difference. Arches mean they have come and gone. A line means is that
fish is still there. So a big key when fishing vertical is knowing the
difference of arches and lines. You want to see lines – that means they’re still
there. Let me see if I can get one to come in the screen here this top line is
me. Okay so I have a fish coming up to look at me right now. That’s him on the
bottom that’s me on the top. He’s still there looking at it. Another one’s coming
up to it….I got him! [laughs] It’s cheating! I’m telling you! [laughs] It’s a nice one too! Okay so what people don’t realize is the
difference between an arch and the line A line on the graph means that signal –
that interference – that thing that’s between bottom and boat is still there.
It’s showing that target still there. An arch means that the target has come and gone is no longer in the cone angle. The cone angle is a signal sent from transducer to the bottom, bounces off the bottom comes back up and then reads it
on the screen. So the line means that when it bounces down, it sees it. When it goes down it sees it, when it bounces up it sees it. It’s continuing to
see this fish or my bait down there. A line is going to tell you that that fish
is directly under the boat.