N.L.:
Flying Lawyer is right, using the wind to exaggerate the groundspeed is a fine airshow trick.
However, when I showed off the Fantail at Paris, we purposely went up wind at peak speed, since 5 knots of wind is meaningless when you have 85 knots of airspeed to play with, and the professionals who were viewing would understand the conceit.
Now THERE'S a Freudian slip of the first magnitude!
Conceit, indeed!