I don't like to brag, but I know that I am the Varnish King here, well probably.
I have tried almost every wood product on the market today (almost literally) and have discovered that Cetol Marine is the best stuff to use in the ****pit, and any areas that are perpetually exposed to the elements, i.e. fish guts, scurbbing etc. Do the teak with Cetol base, and then go over it with the gloss for outstanding protection and great looks.
Put three coats of base on and three of top clear gloss.
Every year, take some metal wool of 400 grit sandpaper and scuff the surface, then jsut put a maintenance coat of cetol gloss over.
As for the louvered doors leading into the cabin- use a nice varnish and more importantly do a nice job. Since the doors are out of the elements you could afford to use a nice varnish. I use Epifanes Gloss on all the non-cetoled teak on my Grady.
Take the teak and sand it clean. Don'y use chemical strippers as they raise the grain of the wood, AND continue the solvents in the chemicals used continue to evaoprate when the varnish is put on consequenting in bubbles of orange peel.
Sand the wood clean with about 150 grit sandpaper. Then begin the smoothing and fdairing process by sanding with 220. When done with the 220, move onto the 320. You'll know when to move onto the next grade paper, by feeling the teak.
Once you have attained a smooth surface with the 320, wipe the wood down with the rag that was moistened with Mineral Spirits.
Now you are ready for your first coat of varnish. Take the first coat (of any varnish except for Epoxy Varnish and Cetol, which is incidentaly a synthetic varnish) and mix cut it with 50 percent of mineral spirits. Take the 50 percent mix of varnish and mineral spirtis and stirr it , BUT DO NOT SHAKE IT. Make sure the stirring is relaxed and just in a circular motion. Shaking the varnish or stirring not carefully will result in air bubbles.
Then take anther clean cup, dish, or whatever you will be using as to you will be tipping your brush. Put a piece of cheese cloth over the opening and pour the varnish through the cheese cloth. (The cheese cloth is intended to filter the varnish).
OK Now your ready to paply the varnish. Buy either a REALLY expensive badger brush or buy some REALLY CHEAP foam brushes. Use either or, but if you intend on using the badger brushes invest in some brush cleaning solution and expect to spend lots of time cleaning the brush. Also expect replace it after about 7 uses with varnish as the bristles will start falling off. It's been my experience that foam brushes are the better choice. However, what ever you do DO NOT anything else as other brushes will make a mess. Uhhhh don't even get me started.
Appy the varnish in long, uninterrupted, continous strokes. The first coat will soak into the wood and not shine as much, but watch out for runs.
Let dry 12-24 hours.
Sand lightly with 320 grit sandpaper.
Next repeat above procdure with the exception of diluting the varnish with 25 percent mineral spirtis, making for a 75% Varnish 25% mineral spirit mixture.
Apply carefully, let dry sand.
Apply the third coat diluted about 85% varnish to 15% mineral spirits.
Apply with more care, let dry sand.
Apply the fourth coat diluted 90-10.
Repeat, and apply remaing coats the can visconsity.
Remember thought to sand lightly inbetween coats, and as you move to high coat numbers, be more and more careful with how you apply the varnish. Also make sure the surface is clean and your work/drying space is also clean.
If you do it right, you should end up with a mirror like finish after 8-10 coats. Everyone who comes on my boat is very much impressed.
All you'll have to do is a maintenence coat every year. No biggie, should only take a little while. It will hold up and impress people.
I'l' take some pics of mine wood and post.