What is already on it? I was told at some distant past moment, (2 years ago) that International and Blakes don't go over each other happily.
On our little boarding plank. I mixed some silver sand into the last coat of varnish, works a treat but I don't know that I would risk it on a precious deck.
Sandtex, yes we tried it. It is awful to keep clean, we moor under an oak tree and I will be repainting the lower decks because they look filthy. Cabin top, protected by a (ruined ) cover are daisy fresh.
I am finishing a replacement cover ASAP so my only problem now is how to protect it from the flipping tree sap.grrr