Axiom 7 question

[admorton3]

I just purchased an Axiom 7DV with transom transducer CPT-100DVS. Not installed yet. Right out of the box I notice "Note: The transducer is not suitable for mounting on vessels where the transom is aft of the propeller". My boat is a sailboat with inboard engine, the transom is aft of everything. I contacted West Marine, where I purchased the unit, and they said the transducer should work fine if installed in-hull. Will this work? What is the down side? Will it work on the my transom? If this one won't work, is there a designed for in-hull transducer that will work with the Axiom? What is the down side of that? I am impressed with the Axiom and I want to make it work, but if there is no reasonable solution, I must return it to WM. Pulling the boat out of water is not an option.