I'm just curious if anyone knows the lifespan of teak decks. I looked at a leaky teaky in michigan several months ago. The boat is stored inside during the winter and the decks are very dark as if they had been oiled. I saw no bungs popping up or missing. I dont know how thick the decks should be. Should I pop out several plugs from various spots on the deck to check, or would that create a problem? The boat is circa 1978 and looks as good in person as it does online. Thanks for any insight.