Thank you all for the good description. I have had a lot of bad experiences trying to resaw "the perfiect board" and now I see that it never had a chance in the first place. I have seen people with 1/8" veneers removed from 1 inch boards and I assumed that it was the set up or some other thing that made their cuts so much better than mine.
With this type of jig, can I assume that I can get a reasonably parellel cut board by following a drawn line, and then let the surface planer take it from their?