Silvertip is right on there, your hull is different from my aluminum hull and your installation will be different from mine.
Just like he says, the transducer will usually go on the starboard side as far away from the prop as possible and in a spot without turbulance if possible. The instructions for the Humminbird and the Lowrance are similar but each has it's own little tweaks and suggestions.
I don't mind sharing a picture if I can find one, but the boat is buttoned up in storage right now, so if there is not one in my phone I won't be able to put one up.
If you google the installation instructions for your unit, you can read them along with illustrations.