In another thread started by Diggin Jiggin, several approaches toward finding the center of balance are suggested:  balancing on a pencil and balancing on the cutting edge of a hack saw blade.  Here's a third method I thought of early this morning:  just tie a simple overhand knot in a small rubber band and slip one of the loops over the plug.  It's surprisingly sensitive to location.  Here I show it on a Danny Jr. Troller copy I'm working on.  Without added lead, the balance point is right at the top of the front flat slope.  Interesting...
