Semolina's what I use, also try holding the turning peel near the fire for like 10 seconds to get it warm before you turn the pizza. I've made a lot of pizzas and I couldn't turn one sooner than 15-20 seconds without it sticking. Heating up the turning peel does help, but the dough needs some time on the stone or it'll stick. Your pizzas shouldn't burn that quickly, what kind of flour are you using? Anything malted or enriched will burn before the pizza's done at those temps. If using malted flour the only thing that works is to drop the temp and do longer bakes. 700f is about the highest temp I could hit without a burnt and still raw in the middle pizza. With the right flour you'll have some breathing room for that 1st turn. If you're using 00 and it still burns almost instantly, I dunno what the problem could be.
You don't need 00 flour, but at least in So Cal, finding flour that isn't malted or enriched can be tough. Kroger brand has an organic AP that works great. Maybe it's my pallet isn't dialed in, but I couldn't tell really any difference between 00 and a good AP.
You could also launch on a screen, that way you can turn it without any worries, and then slide it off the screen about 30-40 seconds into the bake.