Well GR, couldn't find a 'picnic' shoulder at our regular butcher today...but did get 'the same thing' with the big leg already cut out of it...plus, no fat cap.
I'm gonna try essentially the same thing but will cover with foil earlier as it finishes...
Cribs, our buthcher, said we gotta make a reservation to get the full bone in shoulder...hey, either way, it's gonna be right tasty!
I think that cut is called a Boston Butt. I'm not making this up. LOL. I put on a coating of rub and I put kikkoman teryaki (the runny stuff) in a spray bottle and give the P.I.G. pork a spritz every so often to keep the thing moist. Keep the heat low and cook it slow, and you'll have moist and tender.