I had all the screws and caulking replaced on one boat. BIG job. and you are sealing the moisture that leaked in between the fiberglass
with the new caulk! (it's trapped...doesnt dry out over time) I had the teak
Decks removed on another boat and put down Treadmaster. Nice way to take a few hundred pounds and a 1000 holes out of your boat! also a BIG job, and in the end you're asking yourself..."why did I worry about that again?". Not sure what the answer is, either fix will likely be OK....albeit not perfect. I assume your under deck
... otherwise..all bets are off! The nicest Natural teak I've seen has been maintained with a daily flushing
with salt water
. It doesnt silver but stays a nice very light tan when done that way.