Transducer mount, chines and step hull?.?.

[RobsTV]

Trying to figure out where to mount FF transducer.

Manual says do not mount behind a step or chine, and instead position on transom on angled part of hull at least 15" away from keel.

First for the dumb questions.
What is the difference between a step and a chine?
FF manuals shows a step as a portion of the bottom of the hull, that ends forward of the transom. I don't see this on the V20's, yet I see posts stating it is a step hull? Is the step referred to in these forums the area between the chines?

The chines are easy enough to see.
Looking at photo's in the gallery, and at least 12 out of 15 boats have transducer mounted starboard side, behind lowest chine. (exactly where manuals say NOT to place it). Some inboards have it mounted port side, lowest chine.

I tried mounting transducer on angled portion of hull, between lowest chine and keel, as close to chine as possible without being behind it. Roughly 12" starboard side of prop. No good. Above 11MPH it goes nuts. Also, it was too close to prop and bubbles from transducer caused ventilation (blow out).

I am left with what I think are two choices (not going thru hull). Mount like most, behind lowest starboard chine. Or, mount a little more to starbord of lowest chine (between the two chines). The second option might place transducer out of the water when on a plane?

Has anyone tested various locations on a V20 CC for best results? Or just set it and forget it..?