Rainboe,
I'm asking myself the question so that if the wind does happen to be different from the forecasted wind which I based my planning on, then I can ensure I can do some quick recalculation to the heading and timing for the ndb hold. To not do so would be foolish, but knowing which quadrant the wind is coming from isn't good enough to be able to work out suitable heading and timing, for depending on what the inbound to the hold is, a wind from a certain quadrant could give either a head or a tail wind, and the single drift could vary considerably. So, I would like to know how to calculate the exact wind strength and direction.