Steve
Type of/size of boat and motor?
I have a 14' alum semi V with the motor mounted off the right side of
the bow. Works good and goes where I point it as long as the gas
motor is in the water and pointed straight. If you don't have a gas
motor clamp a piece of material to the transom or rear side of the
hull so it acts as a rudder. Doesn't take much. YMMV
Dan, toasty in FL now!
The boat is going to go whichever direction the trolling motor is pointed.
That being said I do use the angle of the big motor to help with the boat
position in current or when fighting the wind. If you are moving the big
motor acts a rudder and will move the back end of the boat one way or the
other. I flip a lot of brush in moderate to heavy current. I'll turn the
motor to position the back of the boat to help my back seater either stay
out of the brush if flipping up tight, or get them closer if pitching from
further out.
I raise my OB when I'm trolling to eliminate the extra drag and to get
the lower unit out of the water for fishing. They are all off-center
but they work well since they are pulling the boat - not pushing it.
Rob
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It's all a matter of physics....drift, drag, and thrust. Since you
probably don't carry a slide rule with you on the water, and you don't
have a set of instruments, just "fly" it by the seat of your pants, like
pilots do when they lose their instruments. :)
Of course a rudder would help with the drift aspect, so using the main
motor as a rudder makes sense. you do increase the drag, but that's
offset by increasing the trust.