Someone posted this vid on FB showing Saskia Sills (Team GB) literally ripping the sail off her board pumping.
https://www.facebook.com/groups/2214321668/
https://www.facebook.com/bryan.mcdonald.186/videos/4070397049718071/
Some knucklehead in the comments decided to show the world that he knows how to pump better than these world class athletes and Ms. Sills politely replies. Screenshot below.
btw, here's her youth results at an age where this guy was probably just floundering around: "In her debut at international level Sills placed in the top 10 at the U15 Techno 293 Worlds in 2008 and came back a year later to win the title. The U17 Techno293 World title followed in 2011 and that was topped by the 2012 Youth Worlds gold after her move in to the RS:X fleet, the Olympic windsurfing equipment."

Mansplaining
In case you haven't seen this one banging around the internet
Haha
I’m pretty sure that’s a air pistol, not known for their huge recoil.
Yep... 10m air. I learned that from the internet. The only things I know about guns is a) assume any gun is loaded and b) don't ever point them at something you don't want to shoot. Watching old cowboy movies is funny, they just swing the things around without a care in the world.
Remember the woman, Saskia Sills, who "couldn't pump"?
Yeah, she's currently third at the IQFoil world champs with one day to go.
Edit: revisited the FB post and someone provided the scientific explanation why she does it correctly (other than her results)
https://www.researchgate.net/publication/23242972_Physiological_demands_of_different_sailing_techniques_of_the_new_Olympic_windsurfing_class
It's a new style technique
shown in the pic below
Interesting, looks like they is sheeting out as she is squatting down and out in step 2.
Makes sense but it seems like I may have been doing the opposite.