For some video lessons and
DIY techniques for replacing a wet
deck core look at Sail Life youtube videos of about 1 yr ago. Owner replaced entire
deck core of 38' Warrior. As I
recall it was not a
teak covered deck. His deck was a fiberglass/plywood/fiberglass sandwich and he removed the outer
fiberglass plus
plywood and kept the
interior fiberglass layer.
It was a significant job but did not cost all that much in materials eg $6K or so. He did the job mostly by himself except for laying up the layers of fiberglass at end with help of some friends in a covered shed.