Inject with any of the main three (Butchers, Kosmos, FAB). All are good. Don't pull till probe tender. Sometimes that's as high as 210*+ for me. Then straight to the cooler for 3-4 hrs. The only venting comes from the holes in the foil from my thermopen. Never had a mushy one............yet.
Fowl Butt BBQ..Chitload of smokers, Wife, dog. "I'm simple n I can prove it"