>I'm going to attach my Garelick transom ladder, and I've already
>drilled the holes. (I was pleasantly surprised at how much fiberglass
>there was before I got to the plywood.)
>
>I was planning on using SS and rubber washers where both sides of the
>bolt squeezed the transom, I figured I'd polysulphide caulk under and
around the outside >rubber washers to insure a good seal on the outside.
This last week I have been installing a high end electronics package for my
P19--A Humminbird "Platinum". I bought it primarily for the depth sounder
(600' model), but it had the extra bonus of a speed sensor (it has a little
waterwheel sensor that attaches to the bottom of the transom), a
temperature sensor built into the waterwheel, plus it also functions as a
fish finder, and tells the constituent relative density of the bottom --so
you know if its rock, sand or mud for anchoring, etc...
To install the sensors (below the water line of course) i bought SS
screws/bolts/nuts. I used the nuts/bolts combo on the wheel sensor, but
didnt like it much, and used the SSwood screws on the transducer. I was
much happier with those. Before screwing them in I filled the hole with
3M Marine white sealer/adhesive to insure no leaks and then the screws
found the holes. Seems to have worked well (will know if it leaks this
weekend--at the Colorado Potter get together at Grand Lake, CO). Ran the
wires up the transom far above the waterline, drilled them through, filled
the rest of the hole with 3M marine, and bought a small clamshell vent to
cover the wire entry hole--this worked really great cosmeticly.
I too was very surprised how thick the transom was--a great quality feeling
considering how thin the glass is in the v berths.