I agree with Newkid about the turbulence on the right side.
I'd move it to the left, about 1/2" from the right side of
the strap. That way, the motor won't cause any turbulence.
I think it would be far enough away from the right strake.
With your motor down, in normal running position, as long as the
transducer has a clear line of sight to both sides of the boat,
then your SI should work just fine.
Go to the back of your boat and look at the line of where your transducer is installed. If you can see anything physically blocking that line on dry land, then it will also be blocking the signals on the water.
Hey Catfish, you might want to throw a little paint on your
trailer, and a propeller on your motor. Just sayin.