Originally Posted by tommays
IMHP a seatrial is to see that the systems work correctly in real world use
NOT THE TIME to decide the boat has some sailing quirk you do not care for which should have been know about by doing research before buying that boat
Not necessarily, Tom.
Whilst you're correct that production boats should
be quite predictable on the water, enabling you to focus on the yacht's systems instead, if there were production defects in that hull (eg. a slight twist), if the boat has been damaged and the repair isn't obvious (eg. skeg slightly off center with keel), if the rig isn't quite right (eg. incorrect mast rake forward-aft or side-to-side) or if the boat is ballasted wrong (eg. engine replacement with heavier engine) - it's far easier to detect these things during a sea-trial than relying on a surveyor on a tight schedule to pick them up with the boat on dry land.
Of course if the boat is a custom one-off, no amount of research will make up for 10 minutes under sail.