Wow! What an answer. It may challenge my growing Visio skills to lump all
this into my work, but is seems like a workable solution and educational to
me as well.

Having played with the control points, I find myself constantly re-zooming
in on each point to get it just right. The "1st" time I move the last point
it not often to the correct end point, hence I may need to make the decision
to lock the shape and drop this pencil mode with a floating button of some
sort (i know it's modal but that is the best I can think of). Other then
that refinement, off I go.