500 lbs at the bottom of the keel (vs. 500 lb wine cellar in the bilge
) would help a fair amount with ultimate stability, no?
If it is also intended as a reef-feeler appendage, it would be more useful if it extended up the leading edge of the keel a bit. Maybe a bit of 5200 to keep from having to drill through an encapsulated keel? (kidding of course)