I have used Epiphane Bootlak for years and it has given complete satisfaction. Indoors, nothing matches it for good looks and durability. On my last project I used Bristol Classic Clear Water Based Urethane Interior Soft Satin which is very easy to use and lovely and hard as a rock when dry. I will probably use it on future projects.
Bootlak is a traditional varnish, and outdoors it does need to be renewed yearly. The better bet on deck is a catalyzed modern varnish. My favorite is Bristol Traditional Amber Urethane which is as long-lived on deck as anything I know of.
I would not put real teak and holly in the cockpit, covered or not. You could put down marine ply and Lonwood teak&holly vinyl, which is wonderful looking and easy maintenance to boot. It is expensive, tho.
1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida