Worry over trub in the primary.
Don't do that!
Just dumped all 11 gallons worth in. I still operated without a pump and try as I may, whirlpool in with my mash paddle doesn't work.
Got another few:
Forget to make a starter for a 10g batch.
Wait until brew day to put your bulkhead in your new mash tun, only to find out it doesn't fit. Extend brew day 1.5 hours while you go grab hardware to make it work damn it.
Think about your up coming porter brew while u r heating strike water for your red ipa which causes you to grab your hard to find (locally) coffee malt and toss it into your new mash tun first. "Mmmm that smells so good, wait wtf am I doing!"
Dump and rinse tun and start over.
Extend brew day an hour.
Fail to reheat strike water enough after spending an hour and a half going to LHBS to grab hardware to make new mash tun work. Mash in to low. Heat more water. Add. Wasnt hot enough. Heat more water. Add. Ok. Mow lawn. Come back to 146* mash tun. 1.065. Should be 1.080. Damn. Drain wort. Add 8 more gallons and let it mash while other boils down on full blast. Drain. Boil. Boil another 30 minutes. Add the rest. Start timer after an hour of boilng.
Attempt to chill 11g with a 25ft IC in July in Tennessee. You know it won't work, and you have planned to build a bigger one, but brew on anyway. (I recirculated ice water with a pond pump at the end btw...)
All this and more happened today. But 9.5 hours later, it's done and cleaned up. I've done 2 brews in less time with less propane.
I love brewing, but not today. Don't do any of that.