I went to Sam's to day and bought a Beef Round Bottom Round Roast, and a Beef Round Sirloin Tip Roast. All I have planned to do withh them is covering them with mustard and rubbing them down. I'd to do one or both of two things, and could really use some tips and advice on how, if I can. I want to have some pulled, and maybe get some burnt ends too. Any advice?