The last 2 number of the serial number will tell you what year the boat is. Hobie Cat has an excellent frequently asked question page on there forum
http://www.hobiecat.com/community/viewforum.php?f=18&sid=f7906b416ee7d9c22cbeb24f768a9df2This should help you if not let me know and I will see what I can do.
Thanks,
Brad Stephens
Authorized Hobie/Vanguard Dealer
www.sunjammers.com info@sunjammers.com850-235-2281
Panama City Beach, FL