Combine roast, beef broth and seasonings in a slow cooker. Cook on low 10-12 hours or high 5-6 hours, until meat is tender and shreds easily. When it's done, remove the bay leaf, shred meat with fork and place back into juices in slow cooker. Place meat in hoagie buns with mayonnaise, if desired, mozzarella cheese or provolone cheese. You can add peppers, onions, tomato, etc. if desired to sandwich.