BeachedMulligan: I think we are just looking at it differently YJ. With tailwind yes you can add yardage to any club
That's what "in the right conditions" means. :-)
It helps to understand the affect winds has on shots if you just generalize, to start. Know that with a helping wind, back spin is going to help the carry. In head winds it will tend to stand the shot up and shorten it. It will always increase the deviation of a missed hit but not always like you would expect. The ball spins in the direction of the wind when it lands.
Get in the right frame of mind and then apply your corrections. A little goes a long way when when you take advantage of all winds. ;-)