Your dough is too sticky at 65% to 70% hydration. So you are going to try 80%?
Defies logic, don't you think?
But you think your issue might be watery sauce?
I'm wondering how the sauce is laying there on the stretched skin long enough to penetrate the dough and increase its stickiness.
When you used 0.2% dry yeast instead of the regular 1-2% it got better perhaps due to not over-proofing it.
Stretches ridiculously easy also says over fermented to me.
Here's my take:
Go back to basics. Forget most everything you've learned.
You are moving from a home oven to a mini incinerator - its a whole different ball game.
In no particular order,
a) Reduce the hydration - it never ceases to amaze me that people who find their dough too wet to handle cannot bring themselves to reduce the amount of water they add.
Pete-zza went into this in detail, and posted some useful links. The professional equivalent of KABF is the "Special". In the link Peter put in his post they list the absorption as 62%.
https://www.pizzamaking.com/forum/index.php?topic=4646.msg39204#msg39204It is said that "operational" hydration can be 2-4% higher than the published absorption.
So 66% is the upper end of the range for this flour. People can and do go quite a bit higher than that, of course, but they have to develop their technique quite a bit to handle it.
I strongly suspect that they would not be trying to slide it off an
aluminium peel.
b) Post your dough formula. Take no offense, but I'd like to see your grams of flour and grams of water and calculate the hydration myself.
I've spotted a couple of errors lately, and I'd also like to know if there is added sugars and oils.
c) Keen to know your workflow.
d) was the "regular 1-2% yeast" fresh or dried?
e) also KABF is, I believe, malted. I don't think malted flours are the best things to use at 800F. That is un malted typo 00 territory.
f) was that regular 1-2% dry or fresh yeast? If dry, do you rehydrate it in warm or cold water? Apparently re-hydrating it in cold water generates a compound that is particularly good at attacking the gluten.