Hi scott,

re:
> That does work well and I've used that, tho sometimes trying to get a line/curve in
> place for trim is difficult depending on the curve (I find it easy for planar, not as
> much for non.

For using Trim, there's an "Add trim points" button you can click which will then let you pick points directly on the curve to use as the cutting spots, you don't have to draw in another line or curve only.

- Michael