High Tec Fishing:

Fishton

Sealiner
When I started targeting bigger bass in deeper water, I must confess that all I was doing was driving around dragging a big crankbait behind the boat and hoping that #1, I find a big fish, and #2, I don’t lose my expensive lure.  Every now and again I got lucky and found the odd 2-3kg fish.
 
My sonar / ‘fishfinder’ (Navman Fish400 bottom of the range) became a very important tool to me because depending on what lure I was pulling, there was a certain depth contour that I had to try follow.  Picking up trees in advance also helped me not lose so many lures.  Very often some of my better fish were caught soon after lightly bumping into these trees.  So knowing as much as possible about these trees became just as important as the depth contour.  This forced me to improve on my ‘underwater vision’, and I bought an Eagle TriFinder.  Trees became so much easier to spot, and with the tri-finder transducer, I could tell if the structure / fish were below the boat, slightly to port or starboard.  It was fantastic, and I started getting a little ‘luckier’ immediately, resulting in my first >4kg bass.
 
Then disaster struck … my wife hooked into a 4.5kg which was 200g bigger than my PB!  Something had to be done about this, and I realized that my biggest downfall was memory, I just couldn’t remember all the spots.  This resulted in a lack of repeatability, so a GPS came into play, a handheld Magellan 315.  The collection of waypoints and starting of a fishing log began.  I couldn’t believe my luck, those big fish started rolling in on a regular basis now. 
 
As time went on I kept upgrading my ‘vision’ (sonar) and ‘memory’ (GPS/Log Book).  The only enemy I had now was time.  There just wasn’t enough time in a day / weekend to fish and study ‘what lies beneath’.  This was solved when I bought my first sonar logging device – the Eagle FishElite 640c.  I could now record my entire day, and in the comfort of my home, take as much time as I wanted to study and record waypoints of drop offs, brushpiles, timber, rock piles etc. etc.  By now I realized that luck was playing a much smaller role in landing these bigger fish than ever before.
 
Then a friend of mine allowed me to study his sediment map of one of my primary dams.  I soon realized that certain areas that had key topographic structure such as funnel points and nearby dropoffs I had never seen on my sonar before had produced a lot of my better fish.  But how do you get this massive map on your boat and somehow fish it accurately?  Using Google Earth and image overlays of these sediment maps allowed me to create waypoints and routes that I could then save onto my GPS.
 
Then I discovered SI or ‘Side Imaging’ … I felt that as a so-called high-tec angler, (and various other names) we had reached the summit of our quest.  We now had full colour 2D high resolution (vertical pixels), GPS waypoints, 2 dimensional topo maps, and now 3D like imagery of structure on the bottom!  But I was wrong, something was still missing, and this is the biggest part of any bass angler’s pre-tournament planning, even if you fish the shallows* only … 3D Bathymetry.
 
Bathymetry uses longitude, latitude and depth to create 3 dimensional orbit able digital models of the bottom of our dams and oceans.  *The reason I say it applies to the shallows as well, is because bass use ‘highways’ (funnel points, old roads, ridges etc) to and from their ‘kitchen’ (shallows) to their ‘living rooms’ (deeper drop offs and structure).  So if you have caught good fish in the shallows of a certain area, you can now use bathymetry to make a well informed guess as to where they came from and how they got there.  This you can now repeat at other similar areas of the dam.  These bathymetric images can also be converted into accurate super fine detailed 2D background maps that can be uploaded to your on-board system.  Your old and new waypoints, trails and routes just become an overlay to these awesome background maps.
 
So now we have 3D bathymetry, 3D structure viewing and 2D bottom type / structure viewing … could there possibly be anything more?
 
Yes, there is!  You need to find the fish in order to fish the fish without scaring them off.  And how do we do that?  With High Definition Broadband Sonar by Lowrance.  (that really came across as a sales pitch of note – but it’s true)  You now have technology available that allows you to interpret with great stealth, accuracy and target separation i.e. what’s a rock, a log or most importantly ….. FISH!  Being able to cover nearly a 60º area below your transducer, with the same clarity as 200kHz on the old technology systems without annoying the fish, is a HUGE benefit.
 
Over the last few years I have managed to put myself and others onto more than 40 bass over 4kg’s, 6 over 5kg’s and one over 6kg’s, using my electronics.
 
Don’t fight technology ………….. Embrace it!  (You’ll find yourself getting a lot ‘luckier’ on every trip)
 

Southpaw

New member
Great post Fishton.
And a very interesting read.
Sounds like you can quite easily become obsessed with all the technology and then at the end of the day going through all the data you have collected during your day on the water.
If you have the technology, use it.
 

Southpaw

New member
Fishton wrote:
Thanks Southpaw, fishing has major OCB tendencies.
 

Yeah im finding that out the hard way. Lucky for me the cash flow or the lack of it is holding me back...still trying to decide if its a good or bad thing.

What kind of detail are these new 'fish finders' able to display? Would say somebody like me who has never used one before be able to see that that is a tree and the botoom is rock or sand and theres a school of 5kg bass? Or does it take time for you to interpret the display?
 

basstacle4see

New member
Never underestimate the advantage of having, and knowing how to use your fishfinder. Some finders has a slot for an SD memory chip and recording function, which you can play back on your PC/laptop at a later stage. This has helped to find some lost structure treasures later.

Also understanding that wpts can be be tranfered between units like Garmin and Lowrance helps. I find that on the Garmin topographic & recreational charts that old waterways are quite accurate....so plotting it on Garmin and importing it into the Lowrance makes it easier to find the drops and channels while on the water

Has anyone come accros software that can be used to create your own maps of dams on Lowrance finders?
 

Fishton

Sealiner
basstacle4see wrote:
Never underestimate the advantage of having, and knowing how to use your fishfinder. Some finders has a slot for an SD memory chip and recording function, which you can play back on your PC/laptop at a later stage. This has helped to find some lost structure treasures later.
See my first post - "This was solved when I bought my first sonar logging device – the Eagle FishElite 640c.  I could now record my entire day, and in the comfort of my home, take as much time as I wanted to study and record waypoints of drop offs, brushpiles, timber, rock piles etc."

Also understanding that wpts can be be tranfered between units like Garmin and Lowrance helps. I find that on the Garmin topographic & recreational charts that old waterways are quite accurate....so plotting it on Garmin and importing it into the Lowrance makes it easier to find the drops and channels while on the water


Unfortunately you are only working with waypoints and trails – a background map is the answer.

Has anyone come accros software that can be used to create your own maps of dams on Lowrance finders?
100% basstacle4see, go to http://www.fishtec.co.za/articles.htm , there are several articles on the subject.  DrDepth is the system I use - see http://www.fishtec.co.za/kzn_maps.htm  and http://www.fishtec.co.za/freshwater.htm
 

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Hey,
What would be a nice fishfinder thing, where i could see structure, depth , temp, and all that, for an inflatable?
Maybe a portable device too.
Anyone know something like this?
For a good price (Im poor)
Thanx peace:)
 

Fishton

Sealiner
For under R1400, you better off with a traditional 'sounder'* and a swimming pool thermometer.

* length of line with a knot tied every 3ft and a rock on the end.

This might come across a bit harsh - but it's honest sound advice.

Cheapest Sonar only - R1 400
Cheapest Color Sonar - R3 100
Cheapest Sonar / GPS Combo - R3 900

But if you want to start interpreting structure correctly, your minimum sonar only is R 3 300

... and for sonar / GPS combo - R5 900.
 
:( Dam.
All i wana know is where the underwater structure is in dams like kwaggas.
Need to know whats going on under me.
Is a sonar ok for this?
Which exact model do u suggest? Remember: Cheap :)
Thanx for the info!
 

Fishton

Sealiner
The ultimate beginner - 'do-all' unit is the Eagle FishElite480.

I demo'd this unit for a customer this morning off Durban Ski Boat Base on Limestone Reef. Look for a thread Named Durban - Limestone in 3D' a bit later. I'm just busy with the graphics now.
 

Fishton

Sealiner
I see you still scratching around the forums for info on Kwaggas BMNP. ;) Have you got a sediment map of kwaggas?
 
Fishton wrote:
I see you still scratching around the forums for info on Kwaggas BMNP. ;) Have you got a sediment map of kwaggas?

haha, ja.

I just have never fished there, and have been planning to make a mission there, but i dont wana waste my time casting at nothing.

Sediment maps look like a colourful Topo map??? I googled it :) Would be nice to have that stuff, and i have searched for it before but couldnt find anything. U know a site or something?

Would like to use the siff winter weather to get info for spring :) Then ITS ON.

 
 
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