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Interesting feedback, and exactly the opposite of the advice from the Dragonfly manual and Raymarine forum administrator feedback. It really all just adds to the confusion. ;)

Moving the transducer to the inside of the strake would put it quite close to the prop on a 13" Whaler, which is why I chose the outside of the strake. Going inside would mean less of a angle on the transom though..

These are the photos of my original installation.

https://flic.kr/p/ypGLPa
https://flic.kr/p/ynokK1
https://flic.kr/p/xsFnYm

I plan to make a wedge to straighten out the transducer in relation to the direction of travel, and I will raise it up. I haven't decided if I will move it to starboard yet.. ho hum.