Join Date: Jan 2003
Location: Maine Coast
Thanked 310 Times in 240 Posts
Rep Power: 18
make sure you test the spot before adhering anything to the inside of the hull. My preference is a zip lock baggy filled with water. Simply place the transducer on the baggy then set the baggy where you want the transducer to go. If there is any air in the laminate, which is very common on hand laid hulls, the transducer will have poor performance.
I HATE silicone for one reason and that reason is that NOTHING removes it except for sand paper and grinding away your hull. Even when wet, and not cured, nothing totally removes it for clean up not mineral spirits not acetone not MEK.. If it were me I'd be using Sikaflex or 3M4200. Silicone is NOT allowed on my boat!
One other option is a toilet bowl wax ring $1.99 at most hardware stores. It molds nicely to the hull and you can just plop the transducer into it and head off sailing. A buddy of mine is going on his fifth season with his "temporary" and "test fit" for his ducer with a wax ring..
-Maine Sail / CS-36T
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