Jack, JRD etc..
Of course, this is predicated on the ability to point.
Or of course, not to point (so well).
I add 3-5 degrees of lee way as an assumption when I'm laying base course lines.
Absolutely correct - but, assuming the OP doesn't have a chartplotter and a autopilot to follow it, the exercise is a good one - to determine an approximate course to get one near his destination.
That curved course line looks a lot more like a snake every time I look at my wake.