Trolling settings

Running a 628, Still far from mastering how to use it, Just wondering what settings people run when trolling? Just to see Pelagics and find some new ground while doing so. Thinking LF/HF split then switch to HF bottom lock if I see any decent shows on the bottom. Any hints or suggestions very appreciated.

Posts: 809

Date Joined: 01/05/09

not too hard interms of

Tue, 2017-10-17 10:47

not too hard interms of settings, all your really need is depths. being able to see sand vs rock vs soft corals can help, but more about the depths in the areas, so good charts i find are more helpful than good sounding.

DTrain's picture

Posts: 486

Date Joined: 10/02/12

The beam width on the 50kHz

Tue, 2017-10-17 13:09

The beam width on the 50kHz is usually wider than the beam on the 200kHz, so sometimes you can see a school of bait on the 50kHz that the 200kHz will miss. The difference between them is pretty marginal though.

The 200 kHz beam on the P66 transducer is pretty wide so not much between them. On the TM260 the 200kHz is much narrower and it makes more of a difference.

The 200 kHz tends to be much better for picking out lumps on the bottom though, unless you start going deeper than 100 meters or so.

I usually find more pelagics by keeping an eye on what the birds are doing, rather than getting lucky and happening to drive on top of a school.


Troyboy's picture

Posts: 84

Date Joined: 23/01/15

 The Airmar site says the P66

Tue, 2017-10-17 20:39

 The Airmar site says the P66 50khz has an angle of 45° and the 200khz is 11°. I'm just struggling to get any real clear shows of anything but big bait balls on the 50khz. Someone recommended sounding around on LF as you'll cover more ground... @30m depth 25m beam width VS 6M beam width.

Definetely agree with you about seeing lumps and detail better with the 200khz.

Posts: 115

Date Joined: 05/08/16

 Better detail and sounding

Thu, 2017-11-09 11:10

 Better detail and sounding at speed with Hf I run bottom lock as well. Turn the gain down a touch that way anything that shows up on bottom lock you know is ground.

Jackfrost80's picture

Posts: 7960

Date Joined: 07/05/12

I run on HF and pretty high

Fri, 2017-11-10 12:56

I run on HF and pretty high gain so that I can mark lumps on the ground for future reference and don't have problems seeing bait balls as I go over them. Same as Dtrain I now just look for the birds and I always thought I had to look for tonnes of birds but keep your eyes out for a 1-3 birds coasting along at a fixed height above the water as they're generally chasing bait schools ready for a bust up.


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