I use Honey Teak, and have for about 5 years. You put on 3 base coats
of the Honey, which is a pigmented polyurethane. You mix the Honey with
a flow fluid and a catalyst. Then you put on 2+ coats of the clear
enamel, again mix the enamel with flow fluid and catalyst. This makes a
beautiful finish that is tough! Be sure to follow their directions
because it's a bit different to apply than regular varnish. Try to do
it when it's cool and/or cloudy. Hot and direct sun will make it bubble
on raw teak on the first coat. For maintenance you only have to scuff
the surface with a 3M red pad and put on another coat or two of clear
annually. http://www.fabulainc.com/
I just finished putting on the annual maintenance coat... it rained
yesterday and the water beads up on the finish just like a car that's
just been waxed.