Just thought I'd add another vote for the wind star. It wouldn't need to take up too much space on the plog, and could come in handy for planning a diversion.
What I'd envisaged is a circle, divided into 8 with lines for each of the major points of the compass (N, NE, E, SE, S etc...). Around the edge of the circle, for each point include a
correction required to steer that course. Also useful might be the ground speed if you were flying the corrected heading. This then gives you a rough idea of how much correction you need to apply, and you can interpolate for headings between the major points if necessary.
As to what wind you use, then I'd probably calculate an 'average' wind for the route being flown. I can't see what else you can do really, other than plot one for each leg. That's going to take up some space though!
Andy