For McCready Theory Reichmann would have you add 50fpm in 15mph, 100 in
25mph and 200fpm at 35mph winds.

A great visual analysis using glider polars with the effects of
headwinds and tailwinds and rising/sinking air can be found in Bob
Wander's Glider Polars and Speed-To-Fly. Bottom line summary by Bob,
add 1/2 to 2/3 of the estimated head wind component to the variometer
speed to fly indication.

And generally, flying a little faster is less of a penalty than slower.
Now maybe if I actually would do that at my next contest, I won't end
up at the bottom of the score sheet ;-}

Chip F.