Correct craft is usually the slowest in coming out with new hull designs. The first Ski Nautique hull was used from 1961-1981, the second(the 2001 hull as it was called) 1982-1989, then the No Wake Zone hull 1990-1996, The TSC1 hull 1997-2001,TSC2 hull?(I think I have the name correct)2002-2009, and then the 200 Optimal Surface Control Hull 2010 to present. I got to meet Ralph Meloon on many occasions. He always stressed they never released anything to the marketplace until they were sure it was going to work properly. They did not want their customers to be guinea pigs on a product that may or may not work. It is under new ownership now. I just hope in the future they don't keep making them bigger. I would prefer 20 foot or less.. For those of us in the north that can cause storage issues.