When replacing the Amel galvanized chain drop pipe with plastic, it’s important to consider the windlass support. Three bolts are supported by fiberglass “wafers” under the deck. The starboard aft bolt is supported by a steel bracket mount which holds the chain drop in place (and rusts). I molded a resin header which fits into the chain drop pipe and receives the aft starboard windlass bolt. Same thickness as the 3 other wafer supports and corrosion proof…….a bit tricky to mold. But if my PVC drop pipe ever breaks its an hour job to replace it.
Personally, doing this project again with galvanized steel or just glassing over the rust problem seems a bit half-a**ed.