In Half 3 of Robertson’s boat construct, he discusses transducer placement.

One of the vital essential and misunderstood components of electronics is well transducers, and extra particularly the way it pertains to placement on the again of or below the boat. I usually obtain questions on what settings anglers must implement to return photos like what I see, the reality is its within the transducer placement, angle and top. Whether it is within the unsuitable place, no setting is appropriate.


Search for areas that can have the least quantity of “soiled water” from turbulence created by something within the water corresponding to hull chine and strakes, kicker motors, rivet traces, and so forth. Usually talking, it’s best to make use of fundamental compact transducers for 2D marking, significantly at greater speeds. Look to mount these as low and away from the engine’s turbulence as attainable.

mounting board template
Make a template out of cardboard to completely match the underside of your boat the place you propose to position your mounting board.

Bigger side-imaging transducers are meant for use at speeds from roughly 1 to five mph and may be positioned greater on the hull, sufficient in order that they’re truly out of the water when on aircraft. It will defend them from hitting issues whereas operating and creating harm and create much less disturbance within the water for a extra correct 2D studying.

Humminbird has a product referred to as a Y cable that enables two transducers to be run into one cable and finally one unit, in order that each can be utilized with out altering transducers. The Y cable all the time makes use of the 2D from the fundamental transducer so it doesn’t intervene with what can be the 2D within the Mega Facet or Down Imaging transducer.

As soon as secured and on the water, ensure to take additional time to tweak each the transducers’ top and angle. You will need to bear in mind that you really want the transducer flat not within the storage, however on the velocity and angle that your boat shall be touring at when making an attempt to mark fish. Slight changes to transducer top and angle will drastically enhance your sonar display’s readability.

cutting plate
The correct instruments will assist you make a extra correct minimize, which will definitely remove complications down the highway.

Transducer Board

In lots of boats, out there area may be very restricted, and it might be greatest to make use of a transducer board so {that a} transducer may be moved a number of occasions when trying to find the most effective location. This permits for a lot fewer holes to be drilled within the boat. Be certain that to mount a transducer board roughly 3/8 of an inch above the underside of the hull so the pressure from water can’t pry it off. Earlier than putting in, it may be helpful to make use of a multi device or one thing much like rating grooves at the back of the transducer board in order that adhesive has some place to go and permit for a greater seal with out gushing out the edges as a lot.

glue grooves for transducer mounting plate
Including just a few grooves to the bottom of the transducer mounter plate will assist the glue create a agency bond. You don’t need this board to work unfastened, ever.
counter sunk holes for transducer mounting plate
Do it up proper, countersink the screw heads so it seems to be good, but additionally create a tighter match.

Areas across the drain plug or drains usually require modifying a transducer board. This may be very helpful, as it’s going to will let you flush-mount a transducer in an space that in any other case wouldn’t have sufficient floor space to mount a transducer. A scroll noticed is useful, however not vital, to assist make distinctive cuts to comply with these distinct contours. A easy carboard template will save time and make for a greater becoming piece.

Right here the mounting plate is customized fitted to wrap across the drain, which seems to be good and retains a low profile. It’s prepared for the transducer.
high speed transducer mounted
Right here you’ll be able to see the high-speed transducer mounted beneath the boat and the Facet-Imaging transducer mounted to the correct. This arrange works wonders.

When truly attaching the transducers to the board ensure to make use of screws that won’t penetrate previous the board itself and into the boat’s transom. One thing so simple as an additional washer on a 3/4-inch screw will make sure that the screw doesn’t penetrate past the everyday 3/4-inch thick transducer board.

Transducers are your eyes below the water and time must be spent to be sure to are getting essentially the most out of your electronics.

Capt. Ross Robertson

Bigwater Fishing

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