Greyline

[eurolarva]

I have an Eagle II graph. It has a menu for gray line. Can someone explain to me what gray line does. I think it has something to do with how hard or soft the bottom is. How does this differ from sensitivity. I noticed in the manual that came with the unit it is pretty gray on what gray line does.

 

[roscoe]

Re: Greyline

I've been trying to get a handle on how that works too. It is supposed to tell you if the bottom is rock, mud, sand?, etc. Hard surface or soft surface.<br /><br />It is not fool proof and I think it can be fooled easily. I was fishing in 12' of water, the bottom had a very thick solid covering of weeds, about 4' thick. It read a soft bottom, starting at 8'.<br /><br />I do know that if you manually turn the sensitivity down, that it gives a totally different greyline image.<br /><br />I don't think this is a feature that I will spend too much time worrying about.

 

[Boatist]

Re: Greyline

eurolarva<br />Gray line is not to tell how hard the bottom is but instead is for seeing a large fish laying on the bottom. You want to adjust it up until you only have a thin black line for the bottom and all below that is gray. This will make it much easier to see a big fish like a sturgeon or pike laying on the bottom. Also if see a big fish off the bottom it will go into gray line as well so makes it eaiser to tell fishes size.<br /><br />To tell bottom hardness look at the width of the bottom echo from top to bottom. The wider the echo the harder the bottom. Go to a clear water lake where you can see big rocks on the bottom and you will see. On some units you must set for deeper water to get complete echo.<br /><br />When useing your unit to find fish always turn the sensitive up until get many false echo then back down until only have a few false echos.

 

[eurolarva]

Re: Greyline

Thanks guys. Dont know how people fished before fish finders came out. I want to use as many options on the machine as I can learn. Thanks for the input

 

[BassMan283]

Re: Greyline

Thanks, Boatist. Always wondered. the fish finder manual writers apparently think people are born knowing what greyline is because they sure don't explain it.

 

[Boatist]

Re: Greyline

BassMan<br />While todays fishfinder are very good in the older unit had much more control. Today every thing is menu driven to make it real simple or automatic. You are very right about the poor job they do explaning many options. I truly belive if one of the major makers put together a good training course for there buyers thay could take over the market. Most people never turn the sensitivity up enough to really see fish. Best info I ever got was from a Lowrance Factory rep, he had put together a whole serries of soundings from a paper graph then went back and wrote on paper what each mark was showing. Very good but he would not sell or copy. Also one of the California Bass clubs payed two experts to come in and show fisherman how to use several units to find different things. Learned a lot of great tricks from them but one I do not use I have forgotten.