Month: April 2017
How to create and use a C-MAP Genesis grass map to catch more and bigger fish
Gamefish ambush baitfish in both submerged vegetation and along deep weed lines, neither of which are visible to the naked eye in most weather and water conditions. But with a Genesis Edge map, you can easily find and fish both deep weed lines and isolated submerged grass. This article will teach you how.
With a Genesis Edge account, you can create a custom grass map that will overlay on your blue-scaled contour map easy-to-see green patches that show the size and shape of the areas of submerged grass/vegetation you mapped.*
Fast-Food McMaps won’t likely satisfy angler hunger for high-quality contour charts
There’s a reason fast food is not made from gourmet ingredients by culinary experts — quality can’t be rushed. It’s likewise for lake maps — you can trade quickness for quality, but the outcome might leave a bad taste in your mouth.
Despite quick-draw, drive-through speed, ‘McMaps’ will not likely satisfy anglers’ hunger for high-quality contour charts. That’s why C-MAP Genesis (formerly know as Insight Genesis) custom contour maps prioritize great quality over instant gratification. To that end, C-MAP employs a highly trained Quality Control Team to ensure that C-MAP Genesis custom contour charts are highly accurate.
The truth is that contour charts can only be as good as the data from which they’re drawn – bad data creates bad maps. So quickly drawing contours based on bad data would do little more than create bad maps fast. (Article continues after image below)
Contour maps are made from sonar signals sent and received by a transducer. Bad sonar signals will create bad maps – or at least bad portions of maps, depending on where and when a sonar signal was compromised. To better understand why, remember that old saying, “Garbage in, garbage out.” This is as true for quickly drawing contour maps as it is for snapping photographs – if it’s too dark out, if your lens is smudged, or if you’re not in focus, you won’t get a good image. Likewise, if your transducer is mis-aligned (see sonar image at right), covered in weeds, or too close to heavy prop-wash, etc, you can’t draw a good map, quickly or otherwise.
Ever been frustrated on the water when depths displayed on your digital map don’t match actual depths determined by your sonar unit? A transducer anomaly like those mentioned above likely caused your map to be made with inaccurate contours. To prevent bad mapping of this sort, C-MAP Genesis utilizes a robust sonar-log data set – rather than just raw digital depth – to create a true representation of bottom contours.
That’s why C-MAP’s highly trained Quality Control team reviews thousands of sonar logs every week, searching out and removing bad data that results from anomalies on the water. A trained professional on the QC team compares your custom map’s contour lines against a recording of the sonar signals from which it was made. That recording, called a sonar log, acts as a truth source, in that it shows the QC Team the same display you saw on your sonar screen on your boat while recording your map-making data. Upon seeing a telltale visual indicator of a transducer anomaly causing bad data, a QC Team pro can delete the incorrect portion of the dataset, ensuring that your map will not include incorrect contour lines in the area. While the culling of bad data can leave a small gap in your map, it’s easy to drive back over that spot the next time you’re on the water and fill in the blank. You can then merge the sonar data from your follow-up trip with data from your original trip, resulting in a more complete, more accurate fishing map.
Without employing real, live, trained QC professionals to sit in your boat and watch your graph for bad data as you drive, a depth-mapping program can’t deliver live returns without sacrificing quality. And fast food will never taste as fine as filet mignon.
How to download a FREE C-MAP Genesis map from the “Promo Uploads” tab
From time to time, C-MAP makes available for download FREE highly detailed, custom C-MAP Genesis contour charts. This article will teach you how to download those maps for use on the water in your compatible* sonar/GPS device.
C-MAP Genesis (formerly know as Insight Genesis) helps anglers find fish fast by offering them free downloads of community-sourced contour charts from Social Map, enabling them to create their own custom contour maps of un-mapped bodies of water, and helping them discover and dissect potential tournament-winning “sweet spots” that don’t show up on off-the-shelf marine maps.
The game-changing C-MAP Genesis bottom-hardness layer shows anglers the location, size and shape of fish-holding hard-bottom to soft-bottom transition areas – dark orange areas are the hardest bottom; a lighter orange indicates the next hardest bottom; tan is the next hardest bottom; and pale yellow shows the softest-bottom spots. The vegetation layer maps out exactly where the lake’s submerged vegetation is growing, making it easy to locate deep weedlines and grass on flats and humps.
To learn how to download a FREE C-MAP Genesis contour chart from the “Promo Uploads” tab on the C-MAP Genesis dashboard, click “Read More” below.
How to use custom depth shading for C-MAP Genesis charts of coastal/deeper water
By default, C-MAP Genesis (formerly know as Insight Genesis) charts shade deeper water dark blue and shallow water lighter blue. In most use cases – especially in fresh water – this default depth shading works fantastic for anglers and other boaters. In coastal waters, fjords and extremely deep reservoirs, however, the palette of blue shading is often spread so thin between the deepest water and the shallowest water that the shallower areas of interest to anglers and other boaters are often shaded a seemingly monochromatic pale blue, to almost white-looking, across a wide depth range — as shown in the image below.