Thanks Jim, thanks Sunbeam. You're right that teak is simply part of having a GB. The rails and the decks are teak. Fortunately for me the window frames are aluminum.
As for getting out, I don't think that a few days varnishing will bite into cruising time. The big point for us is that Penny is much more willing to cruise on the GB.
By the way we had an 84 classic c-dory with a fair amount of teak. One of the things I liked to do after work was to open a beer and start slowly varnishing. Not the strip everything down to bare wood effort but just building up the coats.