But since it’s an 80s fiberglass boat you don’t think it was made very well?
none of the fiberglass boats from the 80's were made very well. no mater what the brand was or if it was a canoe, bass boat, bow rider, cuddy cabin or express cruiser. they all have issue
people had disposable income, they bought a lot of boats. boat makers slapped them together as cheap as possible. manufacturing practices back then were iffy
with your boat, I would weigh it. if you are 100# or more over spec weight, assume the flotation foam has water in it. look inside the hull at the stringers, etc.
If your boat doesnt have rot, it was either never used or it does and you havent found it yet. your boat is a wood and balsa constructed stringers, transom and floor
just google hydrobass restoration and you will many of them where they are getting a total restoration because of rotten wood in the transom, stringers, and deck