Only the 2006 and basically the first 2006 they learned had some possibilities of low speed handling and lock upgrade and those boats were reworked at the factory for no charge to the customer.
The 2007 and later all had these issues directed and resolved before model year change. I've had 3 20i's and have not had any issues with the boats. Probably the best all around boat for smooth, dry ride ride and great performance. Great fishing platform and easy to drive.
Great story: took a friend of mine fishing that owns another brand running down the lake took my hands off the wheel opened my drink and he grabbed the steering wheel. I had to swat his hands away. He could not imagine that the Skeeter will keep a straight line and so easy to drive. He told me he was very impressed and that he was going to have to go home and really think hard about upgrading. You just really need to ride in one to appreciate the difference.