Sundowner 195 Transducer install

[SKSundowner195]

I have a 1995 Sundowner 195 and just purchased myself a new Humminbird Helix 5 fish finder with down imagining and GPS. I am wondering if anybody happens to know the best location on the stern of this boat to install the after market transducer to eliminate/reduce any issues with high speed cruising and water/air turbulence screwing up the signal from the transducer (I do not have any trim tabs installed). Obviously I am unable to just hook it up to the old through hull transducer due to the down imaging readings. Just don't want to be punching holes all throughout the hull in search of the best spot!