Robb-FWIW--I did four boneless pork loins 4+ lb. each, which I had brined. Kept temp 240-250 and took them off at 155 degrees after a tad over 3 1/2 hours. Air temp here when I started was 51 degrees and rose during my cook. I used 3/4 Brinkman pan of sand covered with foil.
Did one brined pork loin and one brined turkey breast a while back and I think that it took about 1 1/2 hours that time, but don't hold me to it-- I don't always make notes and my memory seems to be going the way of .....somewhere, I just can't remember where.
Tom