Hi new to the site. Am a member of the newsletter, new to forum. I have a 5lb boneless rib roast, i am going to be smoking this for dinner at 5pm. i figure about 3 to 4 hours with a 15 to 20 minute sit time before we dig in. I was wondering if i should rub this or just slow roast it natural? I do rub down my ribs and pork butts but am not sure on this rib roast.