I found a 3 1/2 lb chuck roast at the Cub store today for 1.99/lb and picked it up for my sous vide cook. I am asking all if 24 hrs is long enough to get it tender before I give it a sear on my Camp Chef sear box. It will cooking it at 131 degrees for 24 hrs unless someone tells me different. Thanks in advance for any and all suggestions.