: For the last coat of varnish is it better to leave it alone or sand with 400
: to 600 grit ?

: It feels a little grabby when unsanded, but that may be a good thing when it
: is wet and in the water.

: Sea trials in 6 days - hopefully.

Hi Phil,
If the finish is good, leave it. You can buff it if you want.
The grabbyness disappears when it's wet and as it finishes curing, so fit and use decklines of some type.

Enjoy the trials,
Mike Savage
South West Cork