I've been letting a little 'ole hole in the hull get on my back recently. The boat I recently purchased had a (functional?) thru-hull transducer mounted on a wooden fairing block that was rotted out and fell off with a couple pokes of the finger. It is 1" at one end and 1/4" at the other.
Any of you who knows me will know (for better or for worse) I spend a ton of time researching my questions on forums, which almost always leads to conflicting opinions.
I was under the impression that if I just made a new wooden fairing block, I would be taking a short cut and subject to lashings. So I looked into fiberglass but no one makes sheets 1" thick and I don't have the tools to cut it or create such a slope.
The next trend in my thinking was to just glass over the hole and use a in-hull transducer. Excellent. That is easy enough to rationalize, one less hole = good.
I received two quotes from local guys to do this fiberglass job (2" hole). $250-$300. Seems a little steep to me. I'm not entirely familiar with their workmanship either, one was mentioned on sailnet as being a local fiberglass person, the other was on the boat yard guy's phone list...
Seems a lot of people online are advocates for doing the job yourself. Doing a 12:1 taper and then laying up the glass in circles from largest to smallest. I have never done anything with fiberglass so as soon as people start mentioning different resins and fiber types I immediately begin to worry this is over my head or I'm otherwise going to choose something that is not optimal and I'll have a preventable weakness below the waterline.
In anticipation of needing an in-hull transducer and GPS, I bought a chartplotter, transducer, gps combo to save some money, so I don't need the transducer, though I suppose I keep it for a backup?
What would you do in my position?
Thanks so much!