When u have a brand of boats and ill pick on Tophats they say the first model has better glass then the later models, as the years go by technology gets better youd think later models be stronger not necessarily so me thinks.
i had a timber gaff rigged day boat I restored, i glassed her ply hull from bottom off keel to the gunnels, shes still running around water tight as ever,
I have stashed away an 18 foot 40 s built strip planked putt putt ex snapper boat, the carvel system is fine but im going to use dynel on her hull rather then caulk it and rely on the old splines and screws to keep it together, dynel is the bees knees, lots of polyester resin last another 80 years, ill take glass over timber n steel any day with a yacht.