Man, I love hearing this. My sister and I tried to run a yard sale once and nearly started a civil war over pricing a used toaster. We had zero rules and just winged it, which was a huge mistake. So the fact that you guys set clear jobs and a written agreement from the jump is seriously smart. It sounds like you treated it like a real business partnership first, and the family part just made the trust stronger. What was the hardest part about setting up those rules at the beginning?

Ever seen a guy skip the knee kicker?

Leaving that much fat on is just asking for a greasy mess. A good trim gives you better bark and less waste.

Try a moisture meter on the end grain.

Seriously, it's just an email. I do what @dixon.mia said and keep it simple.