Transom Transducer Mounting Location

Thanks all. I think I have it mounted properly now. Now the question is to get the best readings, should it be level with waterline at rest , or slightly up so that when at plane it level with bottom?
 
As mentioned before in my post #16, here's the installation instructions for my particular transducer, of which it is a Garmin GT 56UHD and it says the transducer should extend .125" below a fiberglass hull. I'd look up your transducer part number, get the instructions for it to make sure nothing is vastly different as I imagine some transducers might be slightly different from one another, and then go from there.

 
i assume with any of the adhered-on blocks, you cant mount onto bottom paint?

for the epoxy, you want to sand off bottom paint, wipe, and apply

for the 3M adhesive, i guess you would want to sand the bottom paint off then essentially do a gelcoat correction to get a smooth finish before applying the block
 
Picture is very helpful. I didn't think about going through the scupper. How did you get access through the hull?
 
Side scan transducers must be mounted on centerline or you need two transducers. See Garmin installation instructions. GT51M-TH

GT51M-TH1.jpeg
 
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