damaged sacrificial keel leopard 44

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I damaged the sacrificial keel on my 44 1999 Leopard. I have not received a response from R&C yet. Has anyone out there had to repair or replace one? The boat is in San Felipe, Baja California. I will probably have to take it to Puerto Penasco to get it out of the water, but I need to know how to repair it, or get a new one. The damaged area is about 15 feet long. Anyone ever repaired one? Fiberglass from outside with thin plywood support inside as a mould? Remove keel and work from inside out? Any suggestions and/or pointers appreciated. Is the keel normaly hallow and water in it? The thickness of the material is very thin. I am sure this was engineard this way thus sacrificial! Anyone have a diagram or specs on one? Have a nice day. Hector