yup, very important to seal up any holes made below the waterline or above.Holes sealed up good with 4200. Seems very ridged and secure.
good catch. i mounted when on trailer. once on water it does slant slightly up. adjustment pending. thank youGood looking install! Most of the pics of your horn look like the bell is slanting upward. Make sure it is down, so that it drains.
Looks great! Any chance you supply the part number for reference?