Ha Deepsix
Welcome to the board. There should not be any problems with the design of the SeaCraft 21 the fundamental design has been around for ever. The only concerns would be in the current manufacturers of that design. Usually if there were any problems in the manufacturing process they would have showed up after 7 years. A good boat surveyor could spot those potential problems. I don’t think that any warranty would be honored by the manufacturer so you would be on your own if the surveyor found anything.
FellowShip
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My motto: Just for the Grins