There are other methods of holding a finished bowl in this orientation if you have to reverse the bowl to do something to the bottom (such as remove a tenon or clean up the foot), but the Cole jaws make it easy. Most times, in my preferred order of operations for bowl turning, I don't have to use the Cole jaws, but I turn to them first when I do, because they are handy for what I do. What method are you currently using for this type of operation?