I have plenty of exterior teak. I also sail in the lower latitudes.
If I had an unlimited budget
, I would pay someone to apply 7-10 coats of gloss varnish
, with maintainance recoats every three to four months. But I don't and I won't!
Instead, I am currently using Starbrite Tropical Teak Oil and Sealer.
This is far less labor intensive and gives me an easy 6-7 months or more between recoats.
As for its appearance, well, I can live with it. I can't say it's as attractive as a gloss finish, but I prefer it to something such as Cetol.
It also has far better non-slip qualities than varnish if you are doing seats or any other surface you might be stepping upon. It also is able to be retouched quite easily, something that isn't usually the case with varnish.