I put a pair of pork picnic's on my Egg last night at midnight and then laid down for a two hour nap. Woke up 6 hours later in a bit of panic but was relieved to find the Egg took care of business as expected.
In case you don't know, a picnic is the bottom half of a pork shoulder. A picnic and a butt together is a whole shoulder. Picnics are often cheaper but have less yield in the end. For example, last weekend I started with a 10 lb picnic and ended with just over 4 lbs of pulled pork.
You probably lose 1 lb when you remove the tough skin. Work a sharp knife under the skin and make a series of short strokes, folding the skin flap back as you progress.
The injection is the Chris Lilly world championship recipe (apple juice, salt, water, sugar, worcestershire sauce). I have used this injection for years with good results.
The rub was my basic chipotle bbq rub
2 Tbsp smoked paprika
1 Tbsp kosher salt
1 Tbsp Tone's garlic pepper seasoning
1 Tbsp dark brown sugar
1 tsp dried thyme
1/2 tsp dried chipotle chile
Then I smoked it at 250f about 1.5 hours per pound.
Waiting for them to finish up now but the one we made last weekend was phenomenal.