I have a question here not smoke related. I have cooked several roasts in the crock pot on low , pretty much for several hours, and I have always used a chuck roast, and they always come out excellent and very tender. This time I bought a sirloin tip roast and I'm not going to smoke it. This roast is very lean,not much fat. How should I cook this one? Inthe crock pot on low for a long time or would that dry it out.In the oven maybe at a higher temp.? I had one here a week ago that someone else cooked and it was really tender. Any advice?