Transducer placement location 20cc?

[gordonhg]

Where does everyone mount their transducers? I have tried a few places on the transom making sure it was properly inline with the bottom of the boat to reduce bubbles. When I get above about 1200 rpm I start getting bubbles causing the fish finder to go crazy.

I am thinking of mounting it as an in the hull config. Being a 20cc access to the inside of the hull is quite limited.

Where have people had success mounting transducers so that there is no bubble interference when running at mid to high speeds?

Thanks