Thread: DI vs SI

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  1. #1
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    DI vs SI

    There is alot of talk about Down imaging/Down Scan vs Side Imaging/Side Scan not only when to use them but how you use them. It's impossible to cover everything that pertains to these two different types of technologies (Ie Down Imaging vs Side Imaging) as book can literally be written about the two in itself. There is no doubt that seeing fish on your graph and catching them are two completely different things. Many have confirmed what I have always said about DS and DI. They are great if you want to look at structure and get target seperation from a downward view BUT if I had a dime for every fish I spooked by running over it I would be rich. I wish I took images of fish in structure then to go back over it find that the fish are gone because they got spooked. Honestly SI is still king and always will be king (for the time being) in terms of finding fish, brush locations and most importantly time management. If your a shallow water angler DI isn't no where as useful as SI. SI is STRONG in BOTH Shallow and Deep water applications. Having said that BOTH technologies have their pluses and minuses.

    Here is one method of MANY in why I feel like SI is superior in fishing and marking a piece of structure.

    My methods for fishing open water structure is as follows.

    Find it on Side Imaging and mark a waypoint in the center of the tree.



    Then mark a waypoint at the TOP of the tree and label it TOP



    Then mark a waypoint at the TRUNK of the tree and label it TRUNK



    When you fish a pile especially with a crankbait it's best to fish it from the trunk towards the TOP because the limbs are facing towards the TOP and this helps decrease the chances of getting hung up. BUT aside from treble hook baits this will give you a visual on your GPS mapping exactly where you are at all times in relation to which way the tree lies so that you can fish whatever segment you want to fish and from whatever direction you want to fish it (which can be very important).

    Now how you fish it is up totally up to you. You can fish it vertically or by casting to it. I would suggest you start off by casting to it first before going vertical. If you see fish on SI and your casting at them gets you no where vertical "MIGHT" be a better option, but not always. It depends on how deep your fish/cover is?

    When I approach a pile. I usually throw a underspin type bait or a heavy swimbait to pick off any suspenders. I usually catch the biggest fish by fishing for the fish suspended above the piles or often times they will shoot up out of the pile to hit my bait and it usually happens on the first few casts. If no luck then I will go deeper with the same baits and brush the structure with my bait. If I wish to fish it slower and more methodical I will fish a jig or a finesse type bait. If I fish it vertical I'm either jigging a spoon or a dropshot.

    The beauty of this feature is you can make 3 waypoints on the same screen (less than 30 seconds including screen capture) and not have to make 3 different passes for 3 different waypoints. Do keep in mind that you can mark structure as far away as 360ft on either side of the boat and not have to go directly over said fish and structure. Then go back and label them based on the order that you took them. :)

    That my friends is why I feel SI is the ultimate fish finding technology. Not only is it a time saver in sweeping large quantities of water for fish and structure but it also allows me to see the structure/fish from a distance without having to spook them. .

    Here is what my mapping looks like when I am done. I have the boat positioned to fish this tree from trunk to top

    .



    Atlanta, GA Bass Fishing Guide/Swimbait Mfg
    http://www.BullShad.com

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    #2

    Re: DI vs SI (T Mike)

    Mike, you are the man!
    John

    Solix 12, Helix 12, Onix 10

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    #3

    Re: DI vs SI (T Mike)

    T Mike,

    This is a wonderful "Lesson" that I will study and do my homework in the effort to continually improve my "Bassknowlegde." We all really apprecaite these lessons, your knowledge and your skills.

    Ron

  4. Member dward51's Avatar
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    #4

    Re: DI vs SI (T Mike)

    I never thought about tripple marking a tree like that. Wonderful idea that would let you work the structure by it's actual shape instead of the single waypoint.

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    #5

    Re: DI vs SI (dward51)

    mike great job, but what do you do for weed lines. I have hundreds of way points for weed lines and it sucks?? I wish you could connect the dots, makes it much easier to follow!!!


    mike
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    #6

    Re: DI vs SI (mikesled1)

    Why don't you make multiple waypoints along the weedlines and follow them. Or maybe a trail. Or if it's an island I would make a circle around the grass island using multiple waypoints marking the edges. Then zoom out as needed

    Mike


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    #7

    Re: DI vs SI (T Mike)

    I use the Si the same way, never thought about the multiple wypoints though. I still can't beleive how far off my scren image compared to yours. I feel like i've done everything. I see trees clearly, but not thAt clear

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    #8

    Re: DI vs SI (jseasor)

    I use the say technique for the grass channels and edges but never thought of marking laydowns like this! Good post Mike thanks!
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    #9

    Re: DI vs SI (jseasor)

    Honestly thats as HORRIBLE shot of that tree. I was in a hurry when I did that one. Here is a crisper one.



    Atlanta, GA Bass Fishing Guide/Swimbait Mfg
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  10. Member Doug Vahrenberg's Avatar
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    #10

    Re: DI vs SI (T Mike)

    This is a great thread. Many anglers mark only one way point on their point of interest but how do you know how to line up to precisely fish that structure. I use a triangulation approach. Similar to what you have done. I mark the Front with a waypoint then Right and Left sides. Then I can fire cast after cast directly at the spot I need to fish. Fishing is time management no matter what level you are at from the top Pros to someone that enjoys a few hours on the water. You only have a limited time so spending it on the most productive areas will increase your success rate and more importantly cast at the right areas will make you more productive. Humminbirds standard equipment 50 Channel Receiver with 4 Times per second Refresh rate when hooked direct to the unit will help you position the boat correctly to increase the odds of success.

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    #11
    darn it mike, you gotta stop telling everyone these technqiues! i thought i was the "only" guy doing this! I dont have the trees in the water like you do, but i do have rockplies and most of them are not round, but oblong. I have been labeling the highest point, as well as the ends to give me a reference for casting.

    mikesled1: for outside weedlines, create a good track! The easiest way to do this is by clearing a track, then idle down the edge or wherever you want to mark the weedline. Once done, you can "save current track". Then go into the track settings and change the track to a brightly colored line (or whatever you want instead of the stupid dots). I find myself using tracks almost as much as i do waypoints! In fact, on my main unit, i had so many tracks saved, i ran out of memory and i had to go back and edit out a bunch of tracks (however i do have them all backed up on my PC).

    Before every fishing trip, i always try to remember to clear the tracks and then save it at the end of the day, especially when prefishing a new lake or whatever.

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    #12

    Re: DI vs SI (jseasor)

    Just wondering, to get a crisper shot of a tree not only would have the correct settings help but if the tree was like a whole tree and not broken up. Or can you pretty much get a crisp shot of any tree with the right set settings?


  13. Member Doug Vahrenberg's Avatar
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    #13

    Re: DI vs SI (VX70)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by VX70 &raquo;</td></tr><tr><td class="quote">I use the say technique for the grass channels and edges but never thought of marking laydowns like this! Good post Mike thanks!</td></tr></table>

    Create a Route with the Waypoints marked along the weedline from SI View then you can see it displayed on the unit too. Just choose the waypoints you want to add to Route to create it.

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    #14

    Re: DI vs SI (Doug Vahrenberg)

    I never thought of this but will definitely try this!
    Windy Bay Pro Staff Member http://www.windybayagencies.com

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    #15

    Re: DI vs SI (VX70)

    great stuff!!thanks Mike. if you guys keep it up your going to teach me something...LOL....rick

  16. Member stratos284's Avatar
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    #16

    Re: DI vs SI (fishtoad)

    This falls under the WHY DIDNT I THINK OF THAT catergory!!
    Thanks
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  17. Still Learnin' Shocker's Avatar
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    #17
    WOW! Fantastic Thread... I have been finding many foundations in my primary fishing waters and have come to mark all the corners of the house/barn to accurately fish it, but never thought of doing it with other structure.
    Thanks Much!
    John (Shocker)

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    #18

    Re: DI vs SI (Dalton)

    Sorry my puter took a dump on me and I am just getting back online.

    You can get a crisp shot of anything with the right tweaking of the settings.


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    #19

    Re: DI vs SI (T Mike)

    Good one mike!! i normally create a track to mark the weededge or weedlines.Also i feel your explanation is the best way to fish laydowns.Ive tried this with long tapering points aswell and its really effective