Quick look makes me think that xducer is a normal device with temp. Shoot thru should work, but you won't get water temp data to the head unit.
If you want to test it, fill a sandwich bag with water and sandwich that between the ducer and the hull. If it works acceptably for you, figure out your final location and bond it in.
Ed, if you bond the thru hull ducer to the hull try and get it pointing as close to straight down as you can so that you get a true depth reading, but stay away from any strengthening in the keel
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