Pace, if you fly relative to a cloud, the wind is out of the equation. Put another way: neither cloud or plane cares which way the earth is blowing
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Huv
Sorry if I have misunderstood but I was under the impression that the cloud was being used as a marker over a point on the ground.
Obviously if the cloud is moving at a fair rate of kts by the time you get there presuming it is someway off the cloud will no longer be over its initial ground location.
If you use the cloud and you are travelling West East with the winds and cloud movement North to South you would offset for its original position.
If you maintained that offset to compensate for the winds by the time you got near the cloud it would be way south of its original fix and way south of you.
If you flew to the cloud edge you would be way south of the original position and your track over the ground curved.
Pace