Thanks Joe, it was a tone-gard. I found a pic at
http://www.elderly.com/tone-gard-for...ght-guitar.htm
That was it, but it wasn't what I thought it was when I first saw it.
I am not interested in using one, but I would be interested in knowing how much a difference one of those things plus a John Pearse armrest really makes in the tone.
That Viking guitar stand that capohk linked too seems like it would be a bit awkward for a performer that likes to move around the stage. But what do I know, my biggest audience consists of the empty chairs in my living room.
CK