Oh and for that line above, the #3 - you don't actually need to make it the line the exact same length as the arc as long as you don't enable the "Stretch" mode in the flow options.

When Stretch is off it will match "distance traveled along base curve" to the same distance traveled along the target curve, automatically extending if needed.

When Stretch is on it will match "percentage traveled along base curve" to the same percentage traveled along the target curve.



- Michael