When - and that's an 'only if my Jepp CR type isn't handy - I use a slide type whiz wheel, I prefer wind up for the standard 'find heading & GS' planning problem, and wind down for the others. I can do it the other why but why have to buggerise around shuffling the disk when 'wind up' gives the answer directly?
It's not difficult to remember. Of course it equally possible to learn to use wind up ALL the time. There is NO mathematical difference in the technique. But in general I prefer the method with fewer iterations, no matter whether it's wind up, or wind down.
Even better, get a CR type...
