Wing tips up vs. Wing tips down

[FlySince9]

One is for STOL the other efficiency

 

[IK04]

My 150 had those Horton wing tips, along with the full STOL kit and flap gap/aileron seals.

It landed in less than 100 feet at gross weight. I won a lot of bets...

 

[ktup-flyer]

 

[Velocity173]

I'm confused. Would you want the winglets going up, or going down, on the helicopter rotors?

(I'm asking about the average pilot. Not Eman, who would go down on anything.)

Down, always down.

https://www.airplane-pictures.net/photo/818045/20592-usa-army-sikorsky-uh-60m-black-hawk/