My ensign is on a fresh water lake.
I just use teak oil on every piece of wood in the cockpit, every spring. It will sink in and dry in 24 hours. I apply it with a rag. I get compliments on it.
My entire cockpit wood was stained and varnished by previous owner including the deck. Not sure how it would look on unvarnished wood like some decks on other boats I’ve seen.
All my cockpit wood is good, solid and stout.
Ed Kokoski