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It seems to me that when looking for crappie in deep water (40-50 ft) with the side imaging unit is almost impossible to actually see the fish on the sides of the screen. Seems as though they can only be detected in water column. So my opinion , why use the si for this and instead just use the di. Changing colors doesn't help much.
Am I wrong about this?
If you are in a soft bottom area that will help a lot,may even have to look for shadows on hard bottom,and not have too wide of a view,some of the pro,s will tune in and give good advice,I am just learning.
soft bottom here I think.
When in that deep of water, it's sometimes necessary to increase the SI range in order to show any bottom at all...(because the water column is taking up so much of the screen real estate)...
This, in itself, creates problems marking fish echoes ...because increasing SI range makes all echoes smaller on the screen...
You might try setting the SI to 1 side only ...which takes the echoes from the side chosen and "stretches" them out across more pixels...(basically zooming the chosen side)...
There is definitely nothing wrong with using DI in deeper water as long as the targets you are looking for reside in the area of coverage for the beam shape chosen....
Rickie
good ideas.
remind me what the coverage is for di using 455khz in say 40 ft.
thanks
DSI @ -10db
455 kHz: approximately 70⁰ (side-to-side)
800 kHz: approximately 50⁰ (side-to-side)
http://i477.photobucket.com/albums/r...redownload.png
Rickie
this is total coverage? figures are both sides combined? thanks
This weekend, I was fishing 43 feet of water, it was some standing timber, on SI the Crappie jumped out just fine. I could tell exactly which trees to go to, and how deep to fish? I had a range of 90 set, 3mph, 455 was the si setting, 1198. I realize this wasn't a school of crappie in open water, and maybe that is what you are referring to? Usually I can tell if they are keeper size or not on my FF. I think on mine they show up at a big enough size that even if the tree wasn't there I can see them.
Unless I'm mistaken, the chart is for downlookiing sonar only. There are no figures for side coverage. Aren't most of the side imaging units maxed at around 180'(per side)?Quote:
Originally Posted by brettw
Yes !! (side to side) = both sides combined = total number of feet in the width of coverage.Quote:
Originally Posted by brettw
That's what I understand it to be, anyway. :twocents
... cp :kewl
Yup.. Everyone is correct...
DSI is DownScan...and DownScan is 1 piezo...or 1 beam pointing straight down with a total coverage of the numbers in the graph...
Rickie
But isn't his question specifically regarding side scan?
I think Brett's OP started out with the problems associated with using SI in deeper water (too much screen covered with water column) and then he asked if DI might be better for deeper water...Quote:
Originally Posted by vic n
Then the discussion kinda followed the DI portion of his OP ...
Rickie
Brett
I did two things to help in this Q when using SI in deep water and locating fish. When in the deeper water I switch over to 800 and adjust Sen. up to get a better view then adjust Con. to make it sharper. I leave sharpness off until fish are found, this can be changed to better see how they relate to the structure....makes for a crummy screen shot for posting but does what it needs to out on the water and that is where it counts.
I also change over to one side only to get it to pop out better and see more detail. In these shots I found the structure and fish and then followed those steps. Hope it helps you out.
http://i29.photobucket.com/albums/c2...ps51802442.png
http://i29.photobucket.com/albums/c2...ps9fa6c853.jpg
In this shot sharpness was on and you can see the blurr but can also see the fish as they relate to the tree.
http://i29.photobucket.com/albums/c2...psc79fc7f5.png
Great snapshots, slabbacks.:ThumbsUp I certainly see fish in the first shot.
As I understand the beginning question is about seeing fish in deep water pass the water column,not in the black water column,which would be easy ,but the bottom where water column end and the bottom begins which is hard to see fish in . I too want to see some fish in that area in deep water, 30 plus feet,I know the softer the bottom betters your chance ,but pic,s please, if possible
genec in px #2 you can see fish holding on the bridge and they are not in the water column. In these two shots you can also see fish. These were taken when i first got the 898 and the settings may not have been just right but you can still till what was down there, not enough to make me want to stop and fish but it did tell me to go on.
http://i29.photobucket.com/albums/c2...psa78752a9.png
http://i29.photobucket.com/albums/c2...ps1d90fd41.png
Like I said, not something you want to post but enough to tell me what I need to know out on the water.
so,
in winter, what are we looking for?
crappie stacked up? deep structure? schools of bait?
Warm weather.LOL just joking.I still want to see fish before I fish for them ,on brush,under docks,or near creek channel,but some places I will still fish even if I cannot see them
x2 on the warmer temps :ThumbsUp
Is it just me and the area I fish or do others find fish holding tight to what ever structure they have this time of year, be it docks timber brush or ledges? The standing timber in 30fow or so seem to look like they have leaves....tight as ticks. Let a warm spell hit and they seem to relax a bit and come off some.
Brett look on your map and find two river channels that come together. Two good creeks that have produced good this year for you. Run SI only left or right and work the inside and outside points where they meet from various angles. If it's a good location someone has already dropped brush on that point or you may have standing timber or stumps. Look at it as a hotel on a travel route for the crappie and seeing bait close by is better yet. If a ledge is formed you may see them hanging tight to it. If they are tight to bottom I use a bottom bounce rig and work slow to the drop and the edge of the ledge or in and around the cover.
I have one or two poles in hand with good tip action and spider wire due to the lite bate. As good as the pictures are I've seen from your unit...you'll know it when you see it. Sorry but I have no "fish this structure" info to give due to finding them at all the above listed from one day to the next this time of year. Just depends on what they want due to the weather or bait it seems.
Hope ya get a boat load :ThumbsUp
Slabback ,i agree that many times they look like leaves on tree,i think each lake can be different and how cold it gets,last year don g and me went to one bp and saw fish all over it and caught 92 off it and all were 10 to 14 inches,we left them bitting,threw all back and while leaving went back over with si and they still there but tighter and little deeper
well. I've found 2 deep bp, in deep water, I'll check them every time for sure, also keep scanning 4 more, one thing for sure, large schools of bait are easy to see. There are actually too many of them,
thanks for all the tips
LOADING COOLER TODAY!
just shrink wrapped my HDS, :-)
should be ok?