Have a 2004 model. Using a newer Raymarine C95/97 system with a current transom hung transducer. We have 2 Yam 150's. Transducer blanks out at 17mph. Tried moving it closer to center line but ran out of cable and it's too close to the STBD engine causing it to cavitate on slight turns to STBD. Want to go with a shoot through, but not sure where in the bilge to put it. Looking at the P79 transducer model. Thoughts/experiences?