I don't have a good pic of it, but I mounted my thrower on a board about 10" wide and about as long as the bench is deep. This allows me to use the thrower and have the feel of it being permanently attached to the bench when it, in fact, is not. When I'm not using it, I can turn it around or set it aside completely if I need the bench space. My reloading area is pretty compact, so saving some space can be a huge benefit.
_________________________
Wade