Well IVe taken the plunge and took a grinder to my keel last week, its now lying on the floor next to the boat.
Have to say Im impressed with how this thing was attached, taking off keel-bolt nuts does nothing. As Studs are epoxied into the keel, as well as the boat itself, then heaps of glass over the top of the lot, made for a good watertight fit. Just impossible to take apart, unless you use a big grinder and a sabre saw to cut thru the whole thing, which was the onyl way I colud get it off.
Will be melting down the old one after getting the rest of the bog from it, into a new t