Help reading Lowrance Mark 4 GPS

[StinkyMatt]

Dbarnett,

Those marks look like extreme snag points, rocks and underwater explosives.
Do NOT fish that area again or something bad might happen. Better yet, send me the exact location of this "dead zone" so I can warn others about it.



Seriously, those are likely fish marks you are showing. Sometimes they may look like long horizontal lines, angled lines or wiggly worms on your screen. Only under certain situations will they look like perfect little arches.

[dbarnett66]

Thanks for the replies. I tried taking the photo with my iPhone and it had a heck of a time focusing. I will try the sim mode and play with options. I temporarily used the Fish ID feature and it cleared things up tremendously. Only showed 1 or 2 small fish icons. Since I run a water pump for my bait tank, I was thinking that there might have been interference. Not sure of that theory since I thought about it after I got home.

[salty pirate]

Originally Posted by dbarnett66

Thanks for the replies. I tried taking the photo with my iPhone and it had a heck of a time focusing. I will try the sim mode and play with options. I temporarily used the Fish ID feature and it cleared things up tremendously. Only showed 1 or 2 small fish icons. Since I run a water pump for my bait tank, I was thinking that there might have been interference. Not sure of that theory since I thought about it after I got home.

fish id is no good.
i leave noise off on my ff. sometimes it helps to go back to the factory defaults then adjust from there.

[packeryakker]

Originally Posted by salty pirate

fish id is no good.
i leave noise off on my ff. sometimes it helps to go back to the factory defaults then adjust from there.

I have the same FF and sometimes get some odd lines as well. I usually turn it off and back on and it clears up...or.. go in to your sonar menu and choose a preset value shallow water for instance and then switch back to your regular settings and it may help.