Gray, I would argue that your auto TMA is only as good as the way
you drive the boat.
For example, if you hold the same course and speed during a two hour leg- of course you're going to get a crappy solution from TMA. TMA relies on how your bearing information changes over time. Many times, its up to
you to force that change in the raw data. If you start out in a lag situation, change over to lead (or at least a different lag solution) and watch how smarter your auto crew gets.