Hello I have a get-together planned for this Saturday and I have been asked to make pulled pork. I have smoked alot of 10lbs picnic shoulders..but I will have to smoke 2 shoulders to feed all the people. Will I have to add additional cooking time to smoke multiple pcs of meat? So If I have 2 10lbs shoulders am I looking at 30hrs or 15? Sorry for a dumb question I just want to make sure I give myself plenty of time. Thanks!