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I'm considering mounting my transducer inside the hull of my fiberglass bass boat for 2 reasons. 1. to avoid drilling holes in the hull and avoid exposing the transducer to damage (though I wouldn't be all that worried about damage on a transom mount). 2. to have the transducer mount that is portable so I could have a similar interior hull mount on my fishing kayak and move the system to whatever craft I'm using.
Thoughts?:dono
I maybe need correcting but I don't think you can mount the side or down imaging transducers inside the boat hull. A 2D transducer can be mounted inside the hull as it is just shooting straight down and not out the sides.
Shoot thru the hull wouldn't work with SI .... and even if it did, you'd have to permanently mount it, therefore it wouldn't be transferable between boats.
Permanent mounting is usually done with epoxy, but some have used things like plumbers putty, silicone, and even toilet wax with success. Some even reporting that they used these things with the idea of "getting around to" a permanent installation with epoxy, but they worked fine for years & so they just never "got around to it". Their intention was to use those temporarily, so as to make sure they had the transducer in the best location.
The problem with a SI tdx mounted thru-hull is that the sonar ping is at a near 90deg angle out to each side, and anything in the way to either side will block the signal. Even when mounted outside on the transom, not just ANY spot will work ... for that very reason.