Fosco had a really long post describing in detail how he made his famous Alabama-style pulled pork for his family. Read it if you want to know everything about the process. If you just want the bare facts, read on.
I took 3 pork shoulders: 1, 9 lb bone-in and 2, 7 lb boneless butts. I prepared a double batch of “Southern Succor” rub from the “Renowned Mr. Brown” recipe to rub on the pork butts. Then I made an injection marinade of apple juice, salt, sugar, water and W sauce plus some of the rub. My pork shoulder injection technique needs serious help. I made a total mess of the kitchen when I sprayed marinade all over as I pulled the needle out of the butts. 😛
After injecting the butts, I rubbed them down then put them in a roasting bag and set them in the fridge to marinate.