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Plumbers putty would be too weak of a sealant. Goop is much better. It will withstand anything you throw at it.
With my setup, the transducer is suspended in water above the hull. You have to have some solid or liquid connection between the transducer and the ocean. If there is an air gap, the thing will not work.
Bob
Last edited by dsafety; 01-05-2010 at 01:51 PM.
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