I have an Airmar thru hull transducer.
I think it is the P19 and it is a through hull type.
I want to fit it inside the hull. I gather there are two ways of doing this:
1) Use a large blob of silicone sealant the glue it into the hull, being careful that it is verticle.
2) Fibeglass a tube vertically to the inside of the hull, fill it with oil and put the transducer into the oil.
Does anyone have experience of either of these methods?
Would really appreciate some advice, please!