Tom,
It's my thought and understanding that if you have a good relationship with your butcher and you tell him what you are doing with your particular meats, he or she will leave the necessary fat on it to "self baste" or not run the risk of it drying out during the cooking process. At least that is how it has worked for me. I did a pork butt today(overnight)and it turned out wonderfully!!
BTW...how do you post pics on the site? I would like to show my butt off!