How does that work with a headwind say 15 kts?
One has to assume the wind will be roughly the same once down close to the ground and works fine, just zero the ground speed.
Of course ass others have noted there are other ways to check also, can you maintain 300 fpm climb at 60kts you should be able to hover, you can also try HOGE at the same altitude MSL, but next to the pinnacle with 100' AGL to be able to get out if you cannot hover, Many different ways to check.