Help with transducer placement

MikeR13

Furuno Super Fan
Hey Guys…Currently have transom mount transducers namely ss904, tm54 dff3d and 175 chirp.

Currently have all three mounted in the center between my twin engines. I start to lose bottom around 20 mph and my auto range jumps all over the place because of the loss of bottom. I have a feeling this is happening because my motors are counter rotating and putting the wake so to speak between the motors. I am considering moving a couple of the transducers to the opposite side of each motor to reduce water turbulence and the rotation of the props. Do you think there’s a minimum distance radially that they away from engine? Or give me any ideas to improve at speed as they are all mounted 1/8” below hull

My boat is a 27 ft aluminum hull. Photo for reference
 

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