Hi Kevin, I posted some more details on your windshield thread here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2020.11

Maybe I don't understand what you are trying to get there, but as far as I can tell that is a very good candidate for a totally non-point-pulling type approach because if you want a completely flat side profile cutting the larger sheet with a line will give that to you very easily...

The key thing is to allow the cutting operation to generate that flat edge and to build the base shape to be a larger and more simple sheet, rather than trying to draw all the edges first and trying to surface around all of them only in a "piece by piece" type fashion.

If you try to surface around holes it is way more difficult, the natural way to approach these things with NURBS is to build larger sheets and then cut pieces instead.

- Michael