Like you said strummin, I am sure that Bobby changed stuff up especially later on. I always thought this particular Lost Sailor>Saint I posted was the perfect one to learn from because it was so soon after the song was written (maybe a year and a half old tops). So Bobby was still playing it as written. As you pointed out, they definitely changed stuff over time.
The other reason this is a great version to learn from is you can hear his guitar perfectly. It is clean recording and he cuts right though. You combine that with some good hand shots and you have probably the best example of sailor>saint that you are gonna find.
By the way. For me, that is the pinnacle of his guitar tone.