Originally Posted by merttan
Quick tip: If you install the transducent to your rudder instead of the hull you will avoid another hole to create problems and can get readings wider than fixed installation. My transducent is installed on the back of the rudder and I can get readings of the wider area beneath the boat by turning the rudder left and right...
I have a garmin fish finder. I epoxied the depth transducer to the inside of the hull under the v berth. It works great and it tells me I'm going to hit something just in time to hang on. Most fish finder transducers that I've seen are not easily mounted on my transom since it is angled and out of the water.
One other problem that I had was how to mount the speed transducer. Garmin doesn't offer a thru hull transducer for my fishfinder. I solved this by building a small solid fiberglass "transom" and gluing it to the bottom with 4200 between the keel and rudder.