Headed out today to have a quick slinging session before I'm back to uni. Managed to get my dad out to capture a good few throws on camera too 

https://www.youtube.com/watch?v=orxnryw0gYw&t=2s

I'd be interested if anyone can put a proper name to my overarm/balearic-ish style technique on the long sling, and also tips for byzantine which I'm not quite up to scratch with.

what's your current max distance?

next time for long range try instead of facing 90degrees before the target by facing 180 degrees and the throwing arm @180-270 degrees . you should start with one or two jumps on the right leg before starting rotating legs-hips torso arms. like a shot put glide start . use light stones, the pull will be big.

the only overarm you did were the fig 8 and byzabtine. All the rest were sidearm.

It's based on the orientation of the final throw

Above your shoulder, overarm, below the sholuder: sidearm, below the waisdt: underarm.
Everything else is just random names people have made up over thebyears to confuse newbies
I'd love to see ANYONE doing parms hop skip and jump technique, while simultanes#ously looking backwards.

You're still a fidgety little bugger, but it's coming on. 

One thing you're not doing, is using your waist. You're turning your whole body too soon.

But other than that it all looks good to me    

Have alook at luis versus his mate.


If you see luis is still during his windup, but drops his knee to bring the hips and waist into play and driving with the back foot during the actual throw.
He also starts the throw low and brings it up into the release zone, gaining a little extra power in the process. 
His mate. on the other hand, keeps his body stiff and his throw his quite high.

You really can't do much better than try and emulate luis
As he would no doubt tell you

Ah - right - I guess that is a little  like you described lol

Oh yeah it's good, I was nitpicking. 

Looks good! Lots of stones out there! Low tide?