GETTING A HANDLE ON
STRUCTURE FISHING
by Jim Porter
It is a common question that professional
anglers are asked at seminars and tournaments: "What is structure
and how do you fish it?" It is a very good question, too.
Understanding the difference between 'structure' and 'cover' is a
starting point.
- The terms 'cover' and 'structure' are NOT synonymous. They are
different features.
- Cover is for hiding; structure is for feeding.
- The potential of a given structure feature can be reasonably
determined by: 1) the nearby availability of 25 feet or more of
depth; 2) and, the 'steepness' of the drop-off associated with the
access to that depth.
- Structure, even if it consists of weeds, brush or timber, is not
used to hide the bass, nor is it used for his protection. A
productive structure feature is one, which provides ready
availability of food or serves as a reference point during periods
of inactivity.
- When a bass experiences fear or senses danger, his instinctive
reaction is to dash for the deep water near his structure or cover
area.
- Unless actively feeding, a bass will nearly always hold near the
edge of the structure drop into deep water.
Of all available structure features, ledges and drops are the most
common AND the most continuously productive.
- A 'drop' is a contour change resulting in deeper water and has a
downward angler of decent of 30 degrees, or more. Any change less
than 30 degrees is considered a slope and will not be as productive.
- A 'ledge' is the upper lip, or edge, of a drop.
- While ledges and drops usually exist throughout a body of water,
those associated with submerged channels and the deepest water in
the area are always the more consistently productive.
'Pattern depth' is a term used to define the location (depth) the
majority of bass schools can be expected to be found in a given body of
water.
- It is dependent upon the coloration/ clarity of the water.
- The 'pattern depth' of the normal, lightly stained reservoir is
12-18 feet.
- The clearer the water, the greater the 'pattern depth'.
Then, we must have a rational and orderly approach to addressing
structure. Structure fishing is a seven-step process, each of which is
important to being successful. In order, the steps are:
 DEFINE. This
simply means that we have gained enough knowledge about structure basics
to understand what we should be looking for. We must be able to define
in our own minds those types of underwater topography that are likely to
hold bass. This definition is in terms of shape, soil composition,
relation to the surrounding area (deep water, channels, current flow,
other structures), available cover, water conditions, and seasonal
aspects.
RESEARCH. Generally, this step involves an armchair analysis of
the intended fishing waters to determine what structures are available.
The expected structure will differ between, say, a shallow Florida lake
and a Tennessee reservoir and we can readily fix in our own minds what
probably should be available. A study of a good topographical map is
essential in this step.
LOCATE. Once we have completed the first two steps and actually
are on the water, locating the structure is a logical progression of
events. If we have done our research adequately and have a working
knowledge of the use of a depth sounder or graph, structure depicted on
the map should be fairly easy to locate.
DEFINE. Once our target structure is pinpointed, it is very
important that we define it in terms of shape, ledges/drop-offs,
deep-water locations, hard/soft bottom compositions and available cover
features.
EVALUATE. Now that we have defined the structure, we must
evaluate just how it should be fished. This involves the proper lure
types, the exact locations which hold the most potential, where we
should position the boat, and how best to present the chosen lures. All
these factors are intended to maximize our initial effectiveness,
without first spooking the bass.
EXPLOIT. This is nothing more than combining all the above
factors to catch the maximum number of fish off the selected structure
feature.
RETAIN. The final step is to adequately mark our map so that we
can later return to this same location and, once again, successfully
exploit it. A bit more should be involved than drawing a big circle on
the map. The recorded information should indicate enough of the valid
evaluation data to tell us where on the structure to fish, from which
direction, what depth and what lures apply.
Go
feed them.
Jim sez, "swim
on by www.stickmarsh.com
You'll be glad you did!"
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