Well this Boston Butt was a huge success! We used DM's brine and 5.5 oz of Maple and Cherry. The 8 pounder took every bit of 16 hours to cook but it was worth the wait! We did see some very interesting temperature behavior that I want to share:
We had 4 temperature probes in it. The food probe hit 190 after 12 hours, while the other three read around 168. We decided to keep it cookin'. The food probe eventually maxed out at 208 degrees, but within an hour the same food probe dropped 28 degrees to 180! At the same time, the others started to rise. It was wild.
They just about all leveled out around 191 degrees, after 16 hours. We wrapped it in foil, covered it with towels, and kept it in the cooler. It was still pipin' hot when we shredded it 90 minutes later.
I am glad we left the butt in there for as long as we did because it was perfect.
I'm already thinking about the next one! Thank you, DM and others, for providing such great info.
Here are some photos.