What methods do you use for your headwind/tailwind corrections?
I use the cruise-FL wind and divide it by three and add/subt. it from my track miles for the top of descent determination and also in mid-descent I interpolate it mentally between crzFL-MSL and it works great, but takes a couple of seconds and is not as easy to do by heart as the rest of the calculations. Leaves me less time of coffee drinkin' and talkin' to the girls