okay - two stones in the air at the same time from consequetive throws.
No cheating and adding parachutes to the missiles
I can do it and have witnesses to the fact.
But have yet to see anyone else do it.
Best way to know for sure that you've done this is to sling stones into water and watch the splashes. Also probably the only way to capture it on film.
The 'trick' is to use different styles for each throw. you'll have to work out what they are
Next challenge is to sling more than 10 metres using your non-dominant hand. I'm pretty ambidextrous but have serious problems slinging with my left hand. (if you're a lefty then use your right.)
Third challenge is 5 consequetive throws - each using a different slinging style. And I don't mean diffrent rotations with te same style. And yes there are at least five
Let's start with those